Related topics: climate change · sea ice · arctic sea ice

Human cause of global warming is near certainty, UN reports

Global warming is unequivocal, human influence has been the dominant cause since the mid-20th century, and atmospheric concentrations of greenhouse gases, already at levels not seen in at least 800,000 years, will persist ...

Explosive origins of 'secondary' ice—and snow

Where does snow come from? This may seem like a simple question to ponder as half the planet emerges from a season of watching whimsical flakes fall from the sky—and shoveling them from driveways. But a new study on how ...

Is global warming causing harsher winters?

Millions of people in northern Europe are still battling snow and ice, wondering why they are being punished with bitter cold when—officially—spring has arrived and Earth is in the grip of global warming.

Climate science update: bad news gets worse

Scientists monitoring Earth's climate and environment have delivered a cascade of grim news in 2017, adding to the urgency of UN talks in Bonn next week tasked with ramping up efforts to tame global warming.

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