By Jamie Condliffe on at

Presumably someone at Google is making sure that the car knows its driver is actually a human, rather than a rock. Or a particularly large cat. [XKCD]

By Chris Mills on at

The algal bloom in Lake Erie is particularly bad this year, thanks to a combination of agricultural runoff, sunlight, and warm water. The result, as seen by NASA’s Landsat 8, is the American Great Lakes turning slowly green. Read more >>