Foresters favor planting tree species that have increased rather than mitigated warming over time, researchers find.

Scientists working in the mountains of New Zealand report very high rates of soil weathering, a process that could have important effects on global climate.

Climate change is opening a Northern bonanza for oil, rare earths, and even fish, but experts speaking at AAAS warned that U.S. policy in fields ranging from the environment to Arctic diplomacy may be adapting too slowly to emerging challenges.

Their assessment was a mix of optimism and measured concern: Where some accounts have predicted a new era of geopolitical conflict or even a militarized Arctic, the speakers instead suggested that international cooperation in science and diplomacy is already reducing the risk of conflict in the region.