All around the world, more and more homes and companies are turning to renewables to power their lives and businesses. Why? The drive to cut carbon pollution is one factor, but market forces are another. Year after year, the costs of wind and solar keep plummeting, making it cheaper and easier to dump dirty fossil fuels than at any point in history. 

The practical effect is clear: as costs come down, photovoltaic solar is taking off not just in the U.S., but in nations from Australia to China. Wind is expanding too, and in 2013, the U.S. had enough installed wind capacity to power the state of California and more.

In the first hour of 24 Hours of Reality: 24 Reasons for Hope, we tell the story of this global transition with some help from Climate Reality Chairman and former Vice President Al Gore and our friends in the cultural world.