In his lab at Penn, Vijay Kumar and his team build flying quadrotors,
small, agile robots that swarm, sense each other, and form ad hoc
teams -- for construction, surveying disasters and far more.

If these things can keep from running into each other, why is it so
hard to design and implement a system to keep sailplanes apart?

http://www.youtube.com/watch?v=cfR6t...otation_459294

Boggs