Rowan Jacobsen, in the canoe, and Pete McBride and Sam Walton, on stand-up paddleboards, travel through the upper limitrophe of the delta reach (the section marking the U.S.-Mexico border). Before the dam release, Jacobsen described this parched riverbed as a scene of "Mad Max misery." The temporary flow of water helped bolster native habitats that survive here. Courtesy Fred Phillips hide caption

itoggle caption Courtesy Fred Phillips

The decline of honeybees has been attributed to a variety of causes, from nasty parasites to the stress of being transported from state to state to feed on various crops in need of pollination. iStockphoto hide caption

itoggle caption iStockphoto