Weeks of travel

I have been a traveling man the past several weeks, I was in Challis, ID during the second week of June presenting and participating in a "Pathways to Mars" workshop. NASA and NSF provided funding for this, (I think) and there were a variety of activities. For my part I made an atlatl (AT latl) to show how it was used. People love to throw things, don't they? Projectiles are an important part of all cultures, whether or not you want to believe it or not. Hunting and protecting your family are pretty good reasons to have some sort of projectile around. The Maya used them to puncture the armor of invading Spaniards before disease weakened them to a point where it made no difference. Atlatls have been found on every continent except Antarctica.