There are also additional risks that climate change could lead to the breaching of major tipping points, such as the collapse of the West Antarctic ice sheet or rapid loss of the Greenland ice sheet, leading to extreme sea level rises. (bluebird-electric.net)
(The evidence indicates that 6 degrees of warming is likely to set in motion several major tipping points — not only slower ones such as the aforementioned breakdown of the West Antarctic ice sheet, but possibly more abrupt ones, like massive releases of methane from Arctic permafrost.) (powells.com)
Debaltseve is emerging as a major tipping point in the war in Ukraine. (businessinsider.com)