In a new study, scientists found that the climate milestone could come about a decade sooner than anticipated, even if planet-warming emissions are gradually reduced.
Sea ice is more extensive than in recent low years, but still far lower than historically — even as other markers, such as thickness and age show declines.
The Arctic is changing faster than any environment on Earth. The old, established order is being swept away, leaving scientists to ask: What's coming in its place?
