Greenland's coastal glaciers and ice caps have officially melted past the point of no return. That's right, past the proverbial tipping point, Greenland's ice is quickly and significantly melting.

At this point, it's far too late to reverse some of ... claim it's now impossible to halt the ongoing melting of polar ice caps that is poised to happen this century. Humans can slow down the ...

These points of no return are specific moments when the planet has warmed so much that certain effects become irreversible. Scientists assessed the risk of “tipping” in 16 different parts of ...