Study finds major Earth systems likely on track to collapse: 5 things to know

(The Hill) -- Four key pillars of the global climate are melting in the heat trapped by rising fossil fuel emissions, a new study has found.The relatively stable climate that nurtured human civilization depends in large part on these structures: the ice sheets of Greenland and West Antarctica, the Amazon rainforest and the Atlantic currents that warm Europe.Under current policies, the world faces a scenario in which those pillars have roughly even odds of either surviving or collapsing during th