There is more carbon in the atmosphere trapping heat and moisture than ever before in the 165,00 yeas of human history. We are on the verge of the first ice-free summer in the Arctic in three million years—and back then the Earth was a much different place from the one currently cradling us.

The consequences of a warming planet are appearing much faster than had been projected by climate scientists of just a decade ago. The most dire warnings: rising oceans, freak storms and agricultural collapse, are all taking place right now.

And it’s going to get far worse.

But now, other voices have entered the fray. Those of geologists who study the longer term implications and histories of a planet undergoing rapid global warming. Specifically, they are focused on extinctions.

The climate scientists, gemologists, and those from related scientific disciplines need to continue talking to each other because at some point we may be able to see the critical moment in which the current climate crisis crosses from the realm of a global destabilizer to a global extinction event. We must wake up. – Thom Hartmann, Excerpt from eBook: The Last Hours of Humanity – Warming the World to Extinction