The website keystoneedge.com reports Penn State University has come up with an alternative to the expensive, environmentally hazardous process involved when hydraulic fluid in one of its 100-plus campus elevators leaks:  They’ve switched from petroleum- to soy-based fluid.

The school uses some 17,000 gallons of fluid, and now, thanks to Penn State researcher Joe Perez, it’s all biodegradable soy. Check out this Youtube video in which Penn State officials and scientists talk about how it’s done.

http://www.youtube.com/watch?feature=player_embedded&v=Ts9vOsi9sU8