The Los Angeles native wants to fight smog—and make the city a leader in a green-tech revolution at the same time.

This article was produced by National Geographic Traveller (UK). Revamped features, all-new sections and a fresh look — National Geographic Traveller (UK) has unveiled its biggest redesign in years ...

In an unprecedented effort, 15 aquariums from around the world are teaming up to raise endangered baby zebra sharks and reintroduce them into the wild, where populations have nearly gone extinct.