When it comes to global warming and climate change, we often hear news stories about tipping points where Earth's systems shift into a new and dangerous state. One such may have been reached in the ...

Purposefully sinking boreal trees could help lock away carbon for millennia or longer, but the audacious plan comes with ...

A conveyor belt of ocean water that loops the planet and regulates global temperatures could be heading for a tipping point.

These polar bears appear to be maintaining their physical health despite the loss of sea ice—their preferred hunting grounds ...

Scientists discover a tipping point that took place in 2000, where El Niño’s effect on sea ice loss in Siberia was amplified.

NOAA's report describes how climate change is scrambling ecosystems and threatening livelihoods in the Arctic region. (Patrick Pleul / dpa / Getty Images) The Arctic last season was the hottest it has ...

In 2006, scientists released the first version of the Arctic Report Card, now a staple at the Fall Meeting of the American ...

A population of bears in Norway’s Arctic is confounding scientists’ expectations, getting fatter and healthier even as the ...

In the tropics, the border between troposphere and stratosphere—the tropopause—sits at around 20km, far above any normal ...