Around the world, rainforests are becoming savanna or farmland, savanna is drying out and turning into desert, and icy tundra is thawing. Indeed, scientific studies have now recorded "regime shifts" ...

When sea ice melts, it can lead to faster warming because water absorbs more heat than ice does. That’s one of more than 25 climate feedback loops found in a recent study from Oregon State University.

The emissions of carbon dioxide from ecosystems are known to be higher in warmer climates. Therefore, global warming can speed up emissions, causing a stronger greenhouse effect that worsens climatic ...