These six milestones can help ward off the climate apocalypse

To save world from the climate change apocalypse, we need to start cutting greenhouse gas emissions by 2020, a group of scientists claims. We have just three years to do this, or the planet will warm to levels that kick off irreversible, catastrophic climate changes.To help avoid the worst-case scenario, the scientists set six milestones to reduce carbon emissions across sectors, including energy, transportation, and infrastructure. The goals range from expanding renewables to reducing deforesta