Suspended beneath a thick canopy of trees, the sloth inches along with slow strides. Painfully slow. Intentionally slow. Crawling high up among the branches, traipsing along a 100-foot steel cable, the little creature is like a lethargic acrobat. But its goal is not to delight or to put on a show; in fact, just the opposite. This sloth is all about stealth, observation, and collecting as much sunlight as possible.

After all, this is a solar-powered robot.