How have the trees in Amazonia reacted to the rise in CO2 emissions in recent centuries? It is common knowledge that, of all greenhouse gases, CO2 is the most responsible for global warming. The most ...

Their icy hunting grounds are rapidly shrinking, but polar bears in Norway's remote Svalbard archipelago have defied the odds by bulking up instead of wasting away, a study has found. The Barents Sea ...

Each year, the burly bears of Katmai National Park and Preserve capture global attention in a March Madness-style bracket challenge as fans pick which bear advances in each round. “The bears have been ...

A new study has found that the trunks of trees in the Amazon have become thicker in recent decades — an unexpected sign of the rainforest’s resilience in response to record-high levels of CO2 in the ...