Scientists are now saying they will need to monitor for decades an enormous – and growing - Louisiana sinkhole that has already forced hundreds to evacuate, contaminated an aquifer and has been registering increased seismic activity, including mini-earthquakes.
Photographer Jimmy Nelson spent three-and-a-half years documenting vanishing indigenous cultures all over the world. The resulting photographs have recently been released in a voluminous book called Before They Pass Away. Here is a selection of his images.
A number of Midwestern states woke up Sunday to the threat of intense thunderstorms and even tornados, with officials raising concerns that people -- including fans heading to some NFL games -- might be caught off guard by such severe weather at this time of year.