1.) Is the federal government telling farmers to spread coal ash on crops?
2.) Electricity-generating bacteria could be used for environmental cleanup.
3.) The astounding cost of treating chronic disease in the U.S., visualized.
4.) Audi's "stupid fast" E-tron electric concept car could roll off production lines in two years.
5.) Implanted voice synthesizers could help patients whose brains are conscious but bodies do not function.
This post was originally published on Smartplanet.com