What we're reading: electrical bacteria

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.