diff --git a/domain-server/resources/web/index.shtml b/domain-server/resources/web/index.shtml
index bba4dc4d22..afd0af1679 100644
--- a/domain-server/resources/web/index.shtml
+++ b/domain-server/resources/web/index.shtml
@@ -12,6 +12,7 @@
         <th>Pool</th>
         <th>Public</th>
         <th>Local</th>
+        <th>Uptime (s)</th>
         <th>Kill?</th>
       </tr>
     </thead>
diff --git a/domain-server/resources/web/js/tables.js b/domain-server/resources/web/js/tables.js
index 18e67ac6e7..a4884486c3 100644
--- a/domain-server/resources/web/js/tables.js
+++ b/domain-server/resources/web/js/tables.js
@@ -2,16 +2,47 @@ $(document).ready(function(){
   // setup a function to grab the assignments
   function getNodesAndAssignments() {
     $.getJSON("nodes.json", function(json){
+      
+      json.nodes.sort(function(a, b){
+          if (a.type === b.type) {
+            if (a.wake_timestamp < b.wake_timestamp) {
+              return 1;
+            } else if (a.wake_timestamp > b.wake_timestamp) {
+              return -1;
+            } else {
+              return 0;
+            }
+          } 
+              
+          if (a.type === "agent" && b.type !== "agent") {
+            return 1;
+          } else if (b.type === "agent" && a.type !== "agent") {
+            return -1;
+          }
+          
+          if (a.type > b.type) {
+            return 1;
+          }
+          
+          if (a.type < b.type) {
+            return -1;
+          }   
+      });
+      
       nodesTableBody = "";
       
-      $.each(json.nodes, function (uuid, data) {
+      $.each(json.nodes, function(index, data) {
         nodesTableBody += "<tr>";
         nodesTableBody += "<td>" + data.type + "</td>";
-        nodesTableBody += "<td><a href='stats/?uuid=" + uuid + "'>" + uuid + "</a></td>";
+        nodesTableBody += "<td><a href='stats/?uuid=" + data.uuid + "'>" + data.uuid + "</a></td>";
         nodesTableBody += "<td>" + (data.pool ? data.pool : "") + "</td>";
         nodesTableBody += "<td>" + data.public.ip + "<span class='port'>:" + data.public.port + "</span></td>";
         nodesTableBody += "<td>" + data.local.ip + "<span class='port'>:" + data.local.port + "</span></td>";
-        nodesTableBody += "<td><span class='glyphicon glyphicon-remove' data-uuid=" + uuid + "></span></td>";
+        
+        var uptimeSeconds = (Date.now() - data.wake_timestamp) / 1000;
+        nodesTableBody += "<td>" + uptimeSeconds.toLocaleString() + "</td>";
+        
+        nodesTableBody += "<td><span class='glyphicon glyphicon-remove' data-uuid=" + data.uuid + "></span></td>";
         nodesTableBody += "</tr>";
       });
       
diff --git a/domain-server/src/DomainServer.cpp b/domain-server/src/DomainServer.cpp
index 035e6c9a20..8d1ee9d3dd 100644
--- a/domain-server/src/DomainServer.cpp
+++ b/domain-server/src/DomainServer.cpp
@@ -622,10 +622,12 @@ QJsonObject DomainServer::jsonForSocket(const HifiSockAddr& socket) {
     return socketJSON;
 }
 
+const char JSON_KEY_UUID[] = "uuid";
 const char JSON_KEY_TYPE[] = "type";
 const char JSON_KEY_PUBLIC_SOCKET[] = "public";
 const char JSON_KEY_LOCAL_SOCKET[] = "local";
 const char JSON_KEY_POOL[] = "pool";
+const char JSON_KEY_WAKE_TIMESTAMP[] = "wake_timestamp";
 
 QJsonObject DomainServer::jsonObjectForNode(const SharedNodePointer& node) {
     QJsonObject nodeJson;
@@ -635,6 +637,9 @@ QJsonObject DomainServer::jsonObjectForNode(const SharedNodePointer& node) {
     nodeTypeName = nodeTypeName.toLower();
     nodeTypeName.replace(' ', '-');
 
+    // add the node UUID
+    nodeJson[JSON_KEY_UUID] = uuidStringWithoutCurlyBraces(node->getUUID());
+    
     // add the node type
     nodeJson[JSON_KEY_TYPE] = nodeTypeName;
 
@@ -642,6 +647,9 @@ QJsonObject DomainServer::jsonObjectForNode(const SharedNodePointer& node) {
     nodeJson[JSON_KEY_PUBLIC_SOCKET] = jsonForSocket(node->getPublicSocket());
     nodeJson[JSON_KEY_LOCAL_SOCKET] = jsonForSocket(node->getLocalSocket());
     
+    // add the node uptime in our list
+    nodeJson[JSON_KEY_WAKE_TIMESTAMP] = QString::number(node->getWakeTimestamp());
+    
     // if the node has pool information, add it
     SharedAssignmentPointer matchingAssignment = _staticAssignmentHash.value(node->getUUID());
     if (matchingAssignment) {
@@ -707,18 +715,17 @@ bool DomainServer::handleHTTPRequest(HTTPConnection* connection, const QUrl& url
         } else if (url.path() == QString("%1.json").arg(URI_NODES)) {
             // setup the JSON
             QJsonObject rootJSON;
-            QJsonObject nodesJSON;
+            QJsonArray nodesJSONArray;
             
             // enumerate the NodeList to find the assigned nodes
             NodeList* nodeList = NodeList::getInstance();
             
             foreach (const SharedNodePointer& node, nodeList->getNodeHash()) {
                 // add the node using the UUID as the key
-                QString uuidString = uuidStringWithoutCurlyBraces(node->getUUID());
-                nodesJSON[uuidString] = jsonObjectForNode(node);
+                nodesJSONArray.append(jsonObjectForNode(node));
             }
             
-            rootJSON["nodes"] = nodesJSON;
+            rootJSON["nodes"] = nodesJSONArray;
             
             // print out the created JSON
             QJsonDocument nodesDocument(rootJSON);
diff --git a/examples/collidingParticles.js b/examples/collidingParticles.js
index 2d2cf4fecc..95520df757 100644
--- a/examples/collidingParticles.js
+++ b/examples/collidingParticles.js
@@ -30,9 +30,10 @@ var gravity = {
 var damping = 0.1;
 
 var scriptA = " " +
-             " function collisionWithParticle(other, penetration) { " +
+             " function collisionWithParticle(other, collision) { " +
              "   print('collisionWithParticle(other.getID()=' + other.getID() + ')...'); " +
-             "   Vec3.print('penetration=', penetration); " +
+             "   Vec3.print('penetration=', collision.penetration); " +
+             "   Vec3.print('contactPoint=', collision.contactPoint); " +
              "   print('myID=' + Particle.getID() + '\\n'); " +
              "   var colorBlack = { red: 0, green: 0, blue: 0 };" +
              "   var otherColor = other.getColor();" +
@@ -46,9 +47,10 @@ var scriptA = " " +
              " ";
 
 var scriptB = " " +
-             " function collisionWithParticle(other, penetration) { " +
+             " function collisionWithParticle(other, collision) { " +
              "   print('collisionWithParticle(other.getID()=' + other.getID() + ')...'); " +
-             "   Vec3.print('penetration=', penetration); " +
+             "   Vec3.print('penetration=', collision.penetration); " +
+             "   Vec3.print('contactPoint=', collision.contactPoint); " +
              "   print('myID=' + Particle.getID() + '\\n'); " +
              "   Particle.setScript('Particle.setShouldDie(true);'); " +
              " } " +
diff --git a/examples/globalCollisionsExample.js b/examples/globalCollisionsExample.js
index 266823f564..7abf707cbf 100644
--- a/examples/globalCollisionsExample.js
+++ b/examples/globalCollisionsExample.js
@@ -12,18 +12,20 @@
 
 print("hello...");
 
-function particleCollisionWithVoxel(particle, voxel, penetration) {
+function particleCollisionWithVoxel(particle, voxel, collision) {
     print("particleCollisionWithVoxel()..");
     print("   particle.getID()=" + particle.id);
     print("   voxel color...=" + voxel.red + ", " + voxel.green + ", " + voxel.blue);
-    Vec3.print('penetration=', penetration);
+    Vec3.print('penetration=', collision.penetration);
+    Vec3.print('contactPoint=', collision.contactPoint);
 }
 
-function particleCollisionWithParticle(particleA, particleB, penetration) {
+function particleCollisionWithParticle(particleA, particleB, collision) {
     print("particleCollisionWithParticle()..");
     print("   particleA.getID()=" + particleA.id);
     print("   particleB.getID()=" + particleB.id);
-    Vec3.print('penetration=', penetration);
+    Vec3.print('penetration=', collision.penetration);
+    Vec3.print('contactPoint=', collision.contactPoint);
 }
 
 Particles.particleCollisionWithVoxel.connect(particleCollisionWithVoxel);
diff --git a/examples/gun.js b/examples/gun.js
index e358e6b391..7bdde19d94 100644
--- a/examples/gun.js
+++ b/examples/gun.js
@@ -145,24 +145,21 @@ function shootTarget() {
 
 
 
-function particleCollisionWithVoxel(particle, voxel, penetration) {
+function particleCollisionWithVoxel(particle, voxel, collision) {
     var HOLE_SIZE = 0.125;
     var particleProperties = Particles.getParticleProperties(particle);
     var position = particleProperties.position; 
     Particles.deleteParticle(particle);
     //  Make a hole in this voxel 
-    Vec3.print("penetration", penetration);
-    Vec3.print("position", position);
-    var pointOfEntry = Vec3.subtract(position, penetration);
-    Vec3.print("pointOfEntry", pointOfEntry);
-    Voxels.eraseVoxel(pointOfEntry.x, pointOfEntry.y, pointOfEntry.z, HOLE_SIZE);
+    Vec3.print("penetration", collision.penetration);
+    Vec3.print("contactPoint", collision.contactPoint);
+    Voxels.eraseVoxel(contactPoint.x, contactPoint.y, contactPoint.z, HOLE_SIZE);
     Voxels.eraseVoxel(position.x, position.y, position.z, HOLE_SIZE);
-    //audioOptions.position = position; 
     audioOptions.position = Vec3.sum(Camera.getPosition(), Quat.getFront(Camera.getOrientation()));
     Audio.playSound(impactSound, audioOptions); 
 }
 
-function particleCollisionWithParticle(particle1, particle2) {
+function particleCollisionWithParticle(particle1, particle2, collision) {
     score++;
     if (showScore) {
         Overlays.editOverlay(text, { text: "Score: " + score } );
@@ -174,9 +171,11 @@ function particleCollisionWithParticle(particle1, particle2) {
     var endTime = new Date(); 
     var msecs = endTime.valueOf() - shotTime.valueOf();
     print("hit, msecs = " + msecs);
+    Vec3.print("penetration = ", collision.penetration);
+    Vec3.print("contactPoint = ", collision.contactPoint);
     Particles.deleteParticle(particle1);
     Particles.deleteParticle(particle2);
-    audioOptions.position = newPosition;
+    // play the sound near the camera so the shooter can hear it
     audioOptions.position = Vec3.sum(Camera.getPosition(), Quat.getFront(Camera.getOrientation()));   
     Audio.playSound(targetHitSound, audioOptions);
 }
diff --git a/examples/paintGun.js b/examples/paintGun.js
index 6b6e78b43e..0b30d99fb5 100644
--- a/examples/paintGun.js
+++ b/examples/paintGun.js
@@ -62,9 +62,10 @@ function checkController(deltaTime) {
 
                 // This is the script for the particles that this gun shoots.
                 var script = 
-                         " function collisionWithVoxel(voxel, penetration) { " +
+                         " function collisionWithVoxel(voxel, collision) { " +
                          "   print('collisionWithVoxel(voxel)... '); " +
-                         "   Vec3.print('penetration=', penetration); " +
+                         "   Vec3.print('penetration=', collision.penetration); " +
+                         "   Vec3.print('contactPoint=', collision.contactPoint); " +
                          "   print('myID=' + Particle.getID() + '\\n'); " +
                          "   var voxelColor = { red: voxel.red, green: voxel.green, blue: voxel.blue };" +
                          "   var voxelAt = { x: voxel.x, y: voxel.y, z: voxel.z };" +
diff --git a/examples/spaceInvadersExample.js b/examples/spaceInvadersExample.js
index 61ff93fc8f..df985e2e18 100644
--- a/examples/spaceInvadersExample.js
+++ b/examples/spaceInvadersExample.js
@@ -392,9 +392,10 @@ function deleteIfInvader(possibleInvaderParticle) {
     }
 }
 
-function particleCollisionWithParticle(particleA, particleB, penetration) {
+function particleCollisionWithParticle(particleA, particleB, collision) {
     print("particleCollisionWithParticle() a.id="+particleA.id + " b.id=" + particleB.id);
-    Vec3.print('particleCollisionWithParticle() penetration=', penetration);
+    Vec3.print('particleCollisionWithParticle() penetration=', collision.penetration);
+    Vec3.print('particleCollisionWithParticle() contactPoint=', collision.contactPoint);
     if (missileFired) {
         myMissile = Particles.identifyParticle(myMissile);
         if (myMissile.id == particleA.id) {
diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index 25cd46dcec..9788b88163 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -1572,14 +1572,14 @@ void Application::init() {
 
     // connect the _particleCollisionSystem to our script engine's ParticleScriptingInterface
     connect(&_particleCollisionSystem,
-            SIGNAL(particleCollisionWithVoxel(const ParticleID&, const VoxelDetail&, const glm::vec3&)),
+            SIGNAL(particleCollisionWithVoxel(const ParticleID&, const VoxelDetail&, const CollisionInfo&)),
             ScriptEngine::getParticlesScriptingInterface(),
-            SLOT(forwardParticleCollisionWithVoxel(const ParticleID&, const VoxelDetail&, const glm::vec3&)));
+            SIGNAL(particleCollisionWithVoxels(const ParticleID&, const VoxelDetail&, const CollisionInfo&)));
 
     connect(&_particleCollisionSystem,
-            SIGNAL(particleCollisionWithParticle(const ParticleID&, const ParticleID&, const glm::vec3&)),
+            SIGNAL(particleCollisionWithParticle(const ParticleID&, const ParticleID&, const CollisionInfo&)),
             ScriptEngine::getParticlesScriptingInterface(),
-            SLOT(forwardParticleCollisionWithParticle(const ParticleID&, const ParticleID&, const glm::vec3&)));
+            SIGNAL(particleCollisionWithParticle(const ParticleID&, const ParticleID&, const CollisionInfo&)));
 
     _audio.init(_glWidget);
 
diff --git a/interface/src/avatar/Avatar.cpp b/interface/src/avatar/Avatar.cpp
index d2e6293f3b..90f90c23b3 100644
--- a/interface/src/avatar/Avatar.cpp
+++ b/interface/src/avatar/Avatar.cpp
@@ -46,7 +46,6 @@ Avatar::Avatar() :
     _mode(AVATAR_MODE_STANDING),
     _velocity(0.0f, 0.0f, 0.0f),
     _thrust(0.0f, 0.0f, 0.0f),
-    _speed(0.0f),
     _leanScale(0.5f),
     _scale(1.0f),
     _worldUpDirection(DEFAULT_UP_DIRECTION),
@@ -137,7 +136,8 @@ void Avatar::simulate(float deltaTime) {
     }
     
     // use speed and angular velocity to determine walking vs. standing
-    if (_speed + fabs(_bodyYawDelta) > 0.2) {
+    float speed = glm::length(_velocity);
+    if (speed + fabs(_bodyYawDelta) > 0.2) {
         _mode = AVATAR_MODE_WALKING;
     } else {
         _mode = AVATAR_MODE_INTERACTING;
diff --git a/interface/src/avatar/Avatar.h b/interface/src/avatar/Avatar.h
index f6d5669859..a6cefedef8 100755
--- a/interface/src/avatar/Avatar.h
+++ b/interface/src/avatar/Avatar.h
@@ -160,7 +160,6 @@ protected:
     AvatarMode _mode;
     glm::vec3 _velocity;
     glm::vec3 _thrust;
-    float _speed;
     float _leanScale;
     float _scale;
     glm::vec3 _worldUpDirection;
diff --git a/interface/src/avatar/MyAvatar.cpp b/interface/src/avatar/MyAvatar.cpp
index f8892b99d2..73d2a84eb7 100644
--- a/interface/src/avatar/MyAvatar.cpp
+++ b/interface/src/avatar/MyAvatar.cpp
@@ -169,9 +169,6 @@ void MyAvatar::simulate(float deltaTime) {
     //  Collect thrust forces from keyboard and devices
     updateThrust(deltaTime);
 
-    // calculate speed
-    _speed = glm::length(_velocity);
-
     // update the movement of the hand and process handshaking with other avatars...
     updateHandMovementAndTouching(deltaTime);
 
@@ -203,9 +200,9 @@ void MyAvatar::simulate(float deltaTime) {
     if (fabs(_bodyRollDelta) < MINIMUM_ROTATION_RATE) { _bodyRollDelta = 0.f; }
     if (fabs(_bodyPitchDelta) < MINIMUM_ROTATION_RATE) { _bodyPitchDelta = 0.f; }
 
-    const float MAX_STATIC_FRICTION_VELOCITY = 0.5f;
+    const float MAX_STATIC_FRICTION_SPEED = 0.5f;
     const float STATIC_FRICTION_STRENGTH = _scale * 20.f;
-    applyStaticFriction(deltaTime, _velocity, MAX_STATIC_FRICTION_VELOCITY, STATIC_FRICTION_STRENGTH);
+    applyStaticFriction(deltaTime, _velocity, MAX_STATIC_FRICTION_SPEED, STATIC_FRICTION_STRENGTH);
 
     // Damp avatar velocity
     const float LINEAR_DAMPING_STRENGTH = 0.5f;
@@ -230,7 +227,8 @@ void MyAvatar::simulate(float deltaTime) {
 
     const float WALKING_SPEED_THRESHOLD = 0.2f;
     // use speed and angular velocity to determine walking vs. standing
-    if (_speed + fabs(_bodyYawDelta) > WALKING_SPEED_THRESHOLD) {
+    float speed = glm::length(_velocity);
+    if (speed + fabs(_bodyYawDelta) > WALKING_SPEED_THRESHOLD) {
         _mode = AVATAR_MODE_WALKING;
     } else {
         _mode = AVATAR_MODE_INTERACTING;
@@ -238,7 +236,7 @@ void MyAvatar::simulate(float deltaTime) {
 
     // update moving flag based on speed
     const float MOVING_SPEED_THRESHOLD = 0.01f;
-    _moving = _speed > MOVING_SPEED_THRESHOLD;
+    _moving = speed > MOVING_SPEED_THRESHOLD;
 
     // If a move target is set, update position explicitly
     const float MOVE_FINISHED_TOLERANCE = 0.1f;
@@ -683,7 +681,6 @@ void MyAvatar::updateThrust(float deltaTime) {
     if (_driveKeys[FWD] || _driveKeys[BACK] || _driveKeys[RIGHT] || _driveKeys[LEFT] || _driveKeys[UP] || _driveKeys[DOWN]) {
         const float THRUST_INCREASE_RATE = 1.05f;
         const float MAX_THRUST_MULTIPLIER = 75.0f;
-        //printf("m = %.3f\n", _thrustMultiplier);
         _thrustMultiplier *= 1.f + deltaTime * THRUST_INCREASE_RATE;
         if (_thrustMultiplier > MAX_THRUST_MULTIPLIER) {
             _thrustMultiplier = MAX_THRUST_MULTIPLIER;
@@ -705,11 +702,12 @@ void MyAvatar::updateThrust(float deltaTime) {
     if ((glm::length(_thrust) == 0.0f) && _isThrustOn && (glm::length(_velocity) > MIN_SPEED_BRAKE_VELOCITY)) {
         _speedBrakes = true;
     }
+    _isThrustOn = (glm::length(_thrust) > EPSILON);
 
-    if (_speedBrakes && (glm::length(_velocity) < MIN_SPEED_BRAKE_VELOCITY)) {
+    if (_isThrustOn || (_speedBrakes && (glm::length(_velocity) < MIN_SPEED_BRAKE_VELOCITY))) {
         _speedBrakes = false;
     }
-    _isThrustOn = (glm::length(_thrust) > EPSILON);
+
 }
 
 void MyAvatar::updateHandMovementAndTouching(float deltaTime) {
diff --git a/interface/src/avatar/MyAvatar.h b/interface/src/avatar/MyAvatar.h
index 5c940f0f50..2125b126b3 100644
--- a/interface/src/avatar/MyAvatar.h
+++ b/interface/src/avatar/MyAvatar.h
@@ -50,7 +50,6 @@ public:
     void setShouldRenderLocally(bool shouldRender) { _shouldRender = shouldRender; }
 
     // getters
-    float getSpeed() const { return _speed; }
     AvatarMode getMode() const { return _mode; }
     float getLeanScale() const { return _leanScale; }
     float getElapsedTimeStopped() const { return _elapsedTimeStopped; }
diff --git a/libraries/particles/src/ParticleCollisionSystem.cpp b/libraries/particles/src/ParticleCollisionSystem.cpp
index c827e28c78..028cf80df9 100644
--- a/libraries/particles/src/ParticleCollisionSystem.cpp
+++ b/libraries/particles/src/ParticleCollisionSystem.cpp
@@ -72,17 +72,17 @@ void ParticleCollisionSystem::checkParticle(Particle* particle) {
 }
 
 void ParticleCollisionSystem::emitGlobalParticleCollisionWithVoxel(Particle* particle, 
-                                            VoxelDetail* voxelDetails, const glm::vec3& penetration) {
+                                            VoxelDetail* voxelDetails, const CollisionInfo& collision) {
     ParticleID particleID = particle->getParticleID();
-    emit particleCollisionWithVoxel(particleID, *voxelDetails, penetration);
+    emit particleCollisionWithVoxel(particleID, *voxelDetails, collision);
 }
 
 void ParticleCollisionSystem::emitGlobalParticleCollisionWithParticle(Particle* particleA, 
-                                            Particle* particleB, const glm::vec3& penetration) {
+                                            Particle* particleB, const CollisionInfo& collision) {
                                             
     ParticleID idA = particleA->getParticleID();
     ParticleID idB = particleB->getParticleID();
-    emit particleCollisionWithParticle(idA, idB, penetration);
+    emit particleCollisionWithParticle(idA, idB, collision);
 }
 
 void ParticleCollisionSystem::updateCollisionWithVoxels(Particle* particle) {
@@ -100,11 +100,17 @@ void ParticleCollisionSystem::updateCollisionWithVoxels(Particle* particle) {
         // let the particles run their collision scripts if they have them
         particle->collisionWithVoxel(voxelDetails, collisionInfo._penetration);
 
-        // let the global script run their collision scripts for particles if they have them
-        emitGlobalParticleCollisionWithVoxel(particle, voxelDetails, collisionInfo._penetration);
-
+        // findSpherePenetration() only computes the penetration but we also want some other collision info
+        // so we compute it ourselves here.  Note that we must multiply scale by TREE_SCALE when feeding 
+        // the results to systems outside of this octree reference frame.
         updateCollisionSound(particle, collisionInfo._penetration, COLLISION_FREQUENCY);
+        collisionInfo._contactPoint = (float)TREE_SCALE * (particle->getPosition() + particle->getRadius() * glm::normalize(collisionInfo._penetration));
+        // let the global script run their collision scripts for particles if they have them
+        emitGlobalParticleCollisionWithVoxel(particle, voxelDetails, collisionInfo);
+
+        // we must scale back down to the octree reference frame before updating the particle properties
         collisionInfo._penetration /= (float)(TREE_SCALE);
+        collisionInfo._contactPoint /= (float)(TREE_SCALE);
         particle->applyHardCollision(collisionInfo);
         queueParticlePropertiesUpdate(particle);
 
@@ -121,8 +127,7 @@ void ParticleCollisionSystem::updateCollisionWithParticles(Particle* particleA)
     glm::vec3 penetration;
     Particle* particleB;
     if (_particles->findSpherePenetration(center, radius, penetration, (void**)&particleB, Octree::NoLock)) {
-        // NOTE: 'penetration' is the depth that 'particleA' overlaps 'particleB'.
-        // That is, it points from A into B.
+        // NOTE: 'penetration' is the depth that 'particleA' overlaps 'particleB'.  It points from A into B.
 
         // Even if the particles overlap... when the particles are already moving appart
         // we don't want to count this as a collision.
@@ -130,7 +135,12 @@ void ParticleCollisionSystem::updateCollisionWithParticles(Particle* particleA)
         if (glm::dot(relativeVelocity, penetration) > 0.0f) {
             particleA->collisionWithParticle(particleB, penetration);
             particleB->collisionWithParticle(particleA, penetration * -1.0f); // the penetration is reversed
-            emitGlobalParticleCollisionWithParticle(particleA, particleB, penetration);
+
+            CollisionInfo collision;
+            collision._penetration = penetration;
+            // for now the contactPoint is the average between the the two paricle centers
+            collision._contactPoint = (0.5f * (float)TREE_SCALE) * (particleA->getPosition() + particleB->getPosition());
+            emitGlobalParticleCollisionWithParticle(particleA, particleB, collision);
 
             glm::vec3 axis = glm::normalize(penetration);
             glm::vec3 axialVelocity = glm::dot(relativeVelocity, axis) * axis;
@@ -142,25 +152,25 @@ void ParticleCollisionSystem::updateCollisionWithParticles(Particle* particleA)
             float massB = (particleB->getInHand()) ? MAX_MASS : particleB->getMass();
             float totalMass = massA + massB;
 
-            // handle A particle
+            // handle particle A
             particleA->setVelocity(particleA->getVelocity() - axialVelocity * (2.0f * massB / totalMass));
             particleA->setPosition(particleA->getPosition() - 0.5f * penetration);
             ParticleProperties propertiesA;
-            ParticleID particleAid(particleA->getID());
+            ParticleID idA(particleA->getID());
             propertiesA.copyFromParticle(*particleA);
             propertiesA.setVelocity(particleA->getVelocity() * (float)TREE_SCALE);
             propertiesA.setPosition(particleA->getPosition() * (float)TREE_SCALE);
-            _packetSender->queueParticleEditMessage(PacketTypeParticleAddOrEdit, particleAid, propertiesA);
+            _packetSender->queueParticleEditMessage(PacketTypeParticleAddOrEdit, idA, propertiesA);
 
-            // handle B particle
+            // handle particle B
             particleB->setVelocity(particleB->getVelocity() + axialVelocity * (2.0f * massA / totalMass));
             particleA->setPosition(particleB->getPosition() + 0.5f * penetration);
             ParticleProperties propertiesB;
-            ParticleID particleBid(particleB->getID());
+            ParticleID idB(particleB->getID());
             propertiesB.copyFromParticle(*particleB);
             propertiesB.setVelocity(particleB->getVelocity() * (float)TREE_SCALE);
             propertiesB.setPosition(particleB->getPosition() * (float)TREE_SCALE);
-            _packetSender->queueParticleEditMessage(PacketTypeParticleAddOrEdit, particleBid, propertiesB);
+            _packetSender->queueParticleEditMessage(PacketTypeParticleAddOrEdit, idB, propertiesB);
 
             _packetSender->releaseQueuedMessages();
 
diff --git a/libraries/particles/src/ParticleCollisionSystem.h b/libraries/particles/src/ParticleCollisionSystem.h
index 1b30fd31ac..c6ab97c02b 100644
--- a/libraries/particles/src/ParticleCollisionSystem.h
+++ b/libraries/particles/src/ParticleCollisionSystem.h
@@ -53,13 +53,13 @@ public:
     void updateCollisionSound(Particle* particle, const glm::vec3 &penetration, float frequency);
 
 signals:
-    void particleCollisionWithVoxel(const ParticleID& particleID, const VoxelDetail& voxel, const glm::vec3& penetration);
-    void particleCollisionWithParticle(const ParticleID& idA, const ParticleID& idB, const glm::vec3& penetration);
+    void particleCollisionWithVoxel(const ParticleID& particleID, const VoxelDetail& voxel, const CollisionInfo& penetration);
+    void particleCollisionWithParticle(const ParticleID& idA, const ParticleID& idB, const CollisionInfo& penetration);
 
 private:
     static bool updateOperation(OctreeElement* element, void* extraData);
-    void emitGlobalParticleCollisionWithVoxel(Particle* particle, VoxelDetail* voxelDetails, const glm::vec3& penetration);
-    void emitGlobalParticleCollisionWithParticle(Particle* particleA, Particle* particleB, const glm::vec3& penetration);
+    void emitGlobalParticleCollisionWithVoxel(Particle* particle, VoxelDetail* voxelDetails, const CollisionInfo& penetration);
+    void emitGlobalParticleCollisionWithParticle(Particle* particleA, Particle* particleB, const CollisionInfo& penetration);
 
     ParticleEditPacketSender* _packetSender;
     ParticleTree* _particles;
diff --git a/libraries/particles/src/ParticlesScriptingInterface.h b/libraries/particles/src/ParticlesScriptingInterface.h
index af5f76a6af..8de44e20bb 100644
--- a/libraries/particles/src/ParticlesScriptingInterface.h
+++ b/libraries/particles/src/ParticlesScriptingInterface.h
@@ -11,6 +11,8 @@
 
 #include <QtCore/QObject>
 
+#include <CollisionInfo.h>
+
 #include <OctreeScriptingInterface.h>
 #include "ParticleEditPacketSender.h"
 
@@ -27,17 +29,6 @@ public:
     void setParticleTree(ParticleTree* particleTree) { _particleTree = particleTree; }
     ParticleTree* getParticleTree(ParticleTree*) { return _particleTree; }
     
-private slots:
-    /// inbound slots for external collision systems
-    void forwardParticleCollisionWithVoxel(const ParticleID& particleID, 
-                            const VoxelDetail& voxel, const glm::vec3& penetration) {
-        emit particleCollisionWithVoxel(particleID, voxel, penetration);
-    }
-
-    void forwardParticleCollisionWithParticle(const ParticleID& idA, const ParticleID& idB, const glm::vec3& penetration) {
-        emit particleCollisionWithParticle(idA, idB, penetration);
-    }
-    
 public slots:
     /// adds a particle with the specific properties
     ParticleID addParticle(const ParticleProperties& properties);
@@ -66,8 +57,8 @@ public slots:
     QVector<ParticleID> findParticles(const glm::vec3& center, float radius) const;
 
 signals:
-    void particleCollisionWithVoxel(const ParticleID& particleID, const VoxelDetail& voxel, const glm::vec3& penetration);
-    void particleCollisionWithParticle(const ParticleID& idA, const ParticleID& idB, const glm::vec3& penetration);
+    void particleCollisionWithVoxel(const ParticleID& particleID, const VoxelDetail& voxel, const CollisionInfo& collision);
+    void particleCollisionWithParticle(const ParticleID& idA, const ParticleID& idB, const CollisionInfo& collision);
 
 private:
     void queueParticleMessage(PacketType packetType, ParticleID particleID, const ParticleProperties& properties);
diff --git a/libraries/shared/src/Node.cpp b/libraries/shared/src/Node.cpp
index a4491fb707..1e78bc3feb 100644
--- a/libraries/shared/src/Node.cpp
+++ b/libraries/shared/src/Node.cpp
@@ -19,6 +19,7 @@
 #include "SharedUtil.h"
 
 #include <QtCore/QDataStream>
+#include <QtCore/QDateTime>
 #include <QtCore/QDebug>
 
 const QString UNKNOWN_NodeType_t_NAME = "Unknown";
@@ -47,7 +48,7 @@ const QString& NodeType::getNodeTypeName(NodeType_t nodeType) {
 Node::Node(const QUuid& uuid, char type, const HifiSockAddr& publicSocket, const HifiSockAddr& localSocket) :
     _type(type),
     _uuid(uuid),
-    _wakeMicrostamp(usecTimestampNow()),
+    _wakeTimestamp(QDateTime::currentMSecsSinceEpoch()),
     _lastHeardMicrostamp(usecTimestampNow()),
     _publicSocket(publicSocket),
     _localSocket(localSocket),
diff --git a/libraries/shared/src/Node.h b/libraries/shared/src/Node.h
index 79d75629a6..5d30d6f7b0 100644
--- a/libraries/shared/src/Node.h
+++ b/libraries/shared/src/Node.h
@@ -60,8 +60,8 @@ public:
     const QUuid& getUUID() const { return _uuid; }
     void setUUID(const QUuid& uuid) { _uuid = uuid; }
 
-    quint64 getWakeMicrostamp() const { return _wakeMicrostamp; }
-    void setWakeMicrostamp(quint64 wakeMicrostamp) { _wakeMicrostamp = wakeMicrostamp; }
+    quint64 getWakeTimestamp() const { return _wakeTimestamp; }
+    void setWakeTimestamp(quint64 wakeTimestamp) { _wakeTimestamp = wakeTimestamp; }
 
     quint64 getLastHeardMicrostamp() const { return _lastHeardMicrostamp; }
     void setLastHeardMicrostamp(quint64 lastHeardMicrostamp) { _lastHeardMicrostamp = lastHeardMicrostamp; }
@@ -109,7 +109,7 @@ private:
 
     NodeType_t _type;
     QUuid _uuid;
-    quint64 _wakeMicrostamp;
+    quint64 _wakeTimestamp;
     quint64 _lastHeardMicrostamp;
     HifiSockAddr _publicSocket;
     HifiSockAddr _localSocket;
diff --git a/libraries/shared/src/RegisteredMetaTypes.cpp b/libraries/shared/src/RegisteredMetaTypes.cpp
index d106977ae0..af074c59bc 100644
--- a/libraries/shared/src/RegisteredMetaTypes.cpp
+++ b/libraries/shared/src/RegisteredMetaTypes.cpp
@@ -16,6 +16,7 @@ static int vec2MetaTypeId = qRegisterMetaType<glm::vec2>();
 static int quatMetaTypeId = qRegisterMetaType<glm::quat>();
 static int xColorMetaTypeId = qRegisterMetaType<xColor>();
 static int pickRayMetaTypeId = qRegisterMetaType<PickRay>();
+static int collisionMetaTypeId = qRegisterMetaType<CollisionInfo>();
 
 void registerMetaTypes(QScriptEngine* engine) {
     qScriptRegisterMetaType(engine, vec4toScriptValue, vec4FromScriptValue);
@@ -24,6 +25,7 @@ void registerMetaTypes(QScriptEngine* engine) {
     qScriptRegisterMetaType(engine, quatToScriptValue, quatFromScriptValue);
     qScriptRegisterMetaType(engine, xColorToScriptValue, xColorFromScriptValue);
     qScriptRegisterMetaType(engine, pickRayToScriptValue, pickRayFromScriptValue);
+    qScriptRegisterMetaType(engine, collisionToScriptValue, collisionFromScriptValue);
 }
 
 QScriptValue vec4toScriptValue(QScriptEngine* engine, const glm::vec4& vec4) {
@@ -122,3 +124,14 @@ void pickRayFromScriptValue(const QScriptValue& object, PickRay& pickRay) {
     }
 }
 
+QScriptValue collisionToScriptValue(QScriptEngine* engine, const CollisionInfo& collision) {
+    QScriptValue obj = engine->newObject();
+    obj.setProperty("penetration", vec3toScriptValue(engine, collision._penetration));
+    obj.setProperty("contactPoint", vec3toScriptValue(engine, collision._contactPoint));
+    return obj;
+}
+
+void collisionFromScriptValue(const QScriptValue &object, CollisionInfo& collision) {
+    // TODO: implement this when we know what it means to accept collision events from JS
+}
+
diff --git a/libraries/shared/src/RegisteredMetaTypes.h b/libraries/shared/src/RegisteredMetaTypes.h
index ea65e45c95..0e7732c057 100644
--- a/libraries/shared/src/RegisteredMetaTypes.h
+++ b/libraries/shared/src/RegisteredMetaTypes.h
@@ -15,6 +15,7 @@
 
 #include <QtScript/QScriptEngine>
 
+#include "CollisionInfo.h"
 #include "SharedUtil.h"
 
 Q_DECLARE_METATYPE(glm::vec4)
@@ -50,4 +51,8 @@ Q_DECLARE_METATYPE(PickRay)
 QScriptValue pickRayToScriptValue(QScriptEngine* engine, const PickRay& pickRay);
 void pickRayFromScriptValue(const QScriptValue& object, PickRay& pickRay);
 
+Q_DECLARE_METATYPE(CollisionInfo)
+QScriptValue collisionToScriptValue(QScriptEngine* engine, const CollisionInfo& collision);
+void collisionFromScriptValue(const QScriptValue &object, CollisionInfo& collision);
+
 #endif