Energy & Green Tech

Promising lower prices than lithium-ion, new battery tech stores excess wind and solar energy in molten metal and glowing carbon that powers photovoltaic cells.

Stanford environmental engineering professor Mark Z. Jacobson believes that wind, water, and solar power are enough to save the climate—if our leaders are willing to use them.

Corporate environmental, social, and governance discussions faded at Davos. But history suggests they may survive under different branding.

Air travel is an especially tough form of transportation to clean up—but that doesn't mean it's impossible.