Oil is killing bluefin tune, according to new satellite data from the European Space Agency. Plus we've got the 10 best electric cars from the 2010 Paris Motor Show and helmets that are also airbags. This and more in our roundup of the week in pictures.
Droughts Spreading Like Wild Fire
Plenty of studies have shown that climate change is going to affect precipitation and water supplies, but a new one from the National Center for Atmospheric Research starkly lays out how droughts, some so extreme that they are nearly without precedent, may spread throughout many of the world's most densely populated places by the end of the 21st century.