Hydrogen-powered trains

Hydrogen-powered trains

Hydrogen fuel cells are a greener way to power vehicles. But they have also been cost-prohibitive. Today, though, that’s starting to change — on Monday, German passengers boarded the world’s first hydrogen-powered trains. Sure, buying a hydrogen train is...

Reducing Carbon Emissions

Reducing Carbon Emissions

Concrete is the most abundant man-made material on earth. There's a good chance you're standing on it right now, and it's holding up the buildings around you.   But concrete has an emissions problem. Its essential ingredient, cement, has a huge carbon...