Red-legged frogs thriving in Yosemite after long absence

Red-legged frogs made famous by Mark Twain are thriving in Yosemite Valley after a decades-long absence.

* This article was originally published here

Army pushes for higher speeds in future tiltrotor aircraft

The U.S. Army is developing a new wind-tunnel testbed that will help future tiltrotor aircraft attain higher speeds, improved stability and enhanced safety.

* This article was originally published here