Is The Pentagon Modifying Viruses To Save Crops — Or To Wage Biological Warfare?

What's going on in that greenhouse is the brainchild of Blake Bextine, a program manager at the Defense Advanced Research Projects Agency (DARPA). He thinks there's a way to use this infectious triangle for good.

"This is a beautifully elegant system that puts genes into plants, that causes negative effects. Why can't we turn this system upside down, and use it to deliver positive traits into plants?" Bextine says.