National Geographic: Temperatures at Earth's surface aren't rising as fast as they did in the 1990s, even though the amount of heat-trapping greenhouse gases in the atmosphere continues to increase steadily. This apparent hiatus in global warming has been fodder for skeptics-but among climate scientists, it has sparked a search for the "sink" that is storing all the missing atmospheric heat.
Locating that sink matters, because it could tell researchers how long our current hiatus might last, says Ka-Kit Tung, an atmospheric...