The Arctic is melting. Every year the sea encroaches on another patch of land in northernmost Canada and the permafrost starts to thaw - harbingers of a looming catastrophe. Scientists are trying to find out why.
A 40,000-year-old wolf found in Siberia was bigger than its modern-day descendants. Kept cold in the permafrost, the wolf's fur, ears, brain and teeth had been preserved since the day it died in the Arctic.
Basketball, ice climbing, swimming and surfing — professional athletes are using their popularity to shed light on climate change and encourage others to do more to protect our environment.
The world has seen an "extraordinary increase" in energy demand last year, driving energy-related emissions to a new record. The International Energy Agency (IEA) warned that "urgent action is needed on all fronts."
Methane hydrate buried below permafrost and the ocean floor could meet the world’s energy needs for 100 years – but would extracting it be catastrophic for the climate?
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