Saving tropical coral reefs from destruction caused by rising ocean temperatures will now require extraordinary global effort. Sections of the polar ice sheets may have already passed their tipping points. Their continued melt could lock in several meters of irreversible sea level rise. There’s even a risk of the tipping of one climate system potentially triggering or accelerating the tipping of others.
https://scitechdaily.com/scientists-sound-alarm-earth-has-surpassed-its-first-climate-tipping-point