coal

They were a little optimistic in 1912, but they understood that adding carbon to the atmosphere has side effects.

French president Emmanuel Macron recently announced plans to close all of the country's coal-fired power plants two years ahead of schedule.

A massive solar project has just been completed, and its specs are impressive.

As its CEO, Bill Nye lays out the missions The Planetary Society would like to see NASA focus on over the next 20 years. NASA by nature goes where the future is, and Nye can't help but think of another industry that should follow suit.

If we could jump 50 years into the future, what will our world look like? Flying cars? Hologram phones? Bill Nye sees two technological paths ahead – and we're in the fork between them at this very moment.