The exact moment when Earth will reach its tipping points—moments at which human-induced climate change will trigger irreversible planetary changes—has long been a source of debate for scientists. But ...

The cost of reversing the effects of climate change -- restoring melted polar sea ice, for example -- quickly climbs nearly fourfold soon after a tipping point is crossed, according to new work. Much ...

Global scientists warn that humanity is on the verge of crossing irreversible climate thresholds, with coral reefs already at their tipping point and polar ice sheets possibly beyond recovery. The ...

The Amazon rainforest is so big that it makes its own climate. As they photosynthesise and transpire, its billions of trees collectively produce enough moisture to form clouds. These, by some ...