Arctic sea ice

Michael Wenger still remembers the patches of blood red and vivid violet that daub the landscape of the Northwest Passage.

Warming seas and dwindling sea ice are bringing new species to Arctic waters, a potentially irreversible tipping point for the ecosystem.

There’s still time to save the Arctic summer sea ice at risk of disappearing by mid-century if countries around the world immediately do everything possible to reduce methane emissions, a new study says.

Majestic, increasingly hungry and at risk of disappearing, the polar bear is dependent on something melting away on our warming planet: sea ice.

From melting ice caps to record-breaking wildfires, hurricanes and floods, the deadly consequences of human-caused global warming are here.