There's been some heavy breathing from several states on the U.S. administration's plans to regulate greenhouse gases, and their bluster may butt up against White House bluffing.
Scientists who argue for human-caused climate change published twice as many papers and are cited 64 percent more often than researchers who doubt climate change.
The various data points collected so far in the Kiri's voyage demonstrate how environmental decisions affect the resilience of human habitats and ultimately their cultures.