Article describes a DARPA robot that powers itself by gathering and fueling itself from biomass. This is apparently an approach to energy-autonomous recon robots (harvest grasses and plants where it goes) that has amusingly terrifying connotations when you consider the mental image of a chainsaw-wielding robot capturing and devouring, say, people.

It seems that DARPA, which once built things that seemed like the fevered imaginations of a 14 year old boy, is now building things that seem like the fevered imaginations of a 7 year old boy.