NASA's flying methane meter built for Mars finds work on Earth
 

Just as new military technologies often trickle down to civilian uses, a high-tech methane detector originally developed to detect gases on Mars has found a new role here on Earth. NASA's Jet Propulsion Lab built the the Open Path Laser Spectrometer...

http://www.engadget.com/2016/03/28/n...work-on-earth/