Earth on verge of five catastrophic climate tipping points, scientists warn

Humanity faces 'devastating domino effects' including mass displacement and financial ruin as planet warms Many of the gravest threats to humanity are drawing closer, as carbon pollution heats the planet to ever more dangerous levels, scientists have warned. Five important natural thresholds already risk being crossed, according to the Global Tipping Points report, and three more may be reached in the 2030s if the world heats 1.5C (2.7F) above pre-industrial temperatures.