Why don’t we turn uninhabited desert expanses, like the Sahara, into places to harvest solar power? Because the effects on our ocean, atmosphere and weather systems could be big and disastrous, say researchers Benjamin Smith and Zhengyao Lu.

US President Joseph R. Biden recently announced ambitious new climate goals. What are the changes needed to reach these new targets? And how will they affect our lives? Climate policy expert Nathaniel Keohane explains.

There’s a green hydrogen rush happening worldwide! Green hydrogen is based on hydrogen, the most abundant chemical in the universe, and it’s carbon-free. Here’s a quick look at what it is, which countries are investing in it, and how it could help slow global warming.

From wind turbine technicians and forest fire inspectors to urban farmers and new plastics engineers, these positions represent just some of the employment opportunities available as we transition to a cleaner economy.

Someday, solar panels may be light and cheap enough that they could be hung on a clothesline, thanks to a synthetic mineral called perovskite. Physicist Sam Stranks explains the solar-powered science and the challenges that stand in its way.

While some world leaders resist global cooperation, city leaders are working across borders to tackle big issues like global warming, immigration and terrorism, says urban expert Robert Muggah.

Here’s a riddle for you: A plane flew for five days and nights, staying airborne for 118 hours. But it didn’t use a single drop of fuel. How? Bertrand Piccard explains.