The global price tag for 100 Percent renewable energy: $73 trillion

A global effort to transition to 100 percent renewable energy by 2050 would cost nations $73 trillion upfront — but the expense will pay for itself in under seven years, according to a new report. The shift to a zero-carbon global economy would create 28.6 million more full-time jobs than if nations continue their current reliance on fossil fuels.

As climate change worsens, a cascade of tipping points looms

New research warns that the earth may be approaching key tipping points, including the runaway loss of ice sheets, that could fundamentally disrupt the global climate system. A growing concern is a change in ocean circulation, which could alter climate patterns in a profound way.

Greenland ice losses rising faster than expected

Greenland is losing ice seven times faster than in the 1990s and is tracking the Intergovernmental Panel on Climate Change’s high-end climate warming scenario, which would see 40 million more people exposed to coastal flooding by 2100.