Sea-level rise is threatening San Francisco’s shores. In February, the city began vegetating the sand dunes as part of its ...

It should come as no surprise that when I head to a tropical island, I am more interested in the mountains than the beach.

Foraminifera are single-celled marine organisms with a calcareous shell. They not only provide evidence of past habitats, but ...

Welcome to Nat Geo Your Shot: National Geographic’s global community for aspiring visual storytellers. Find the community on Instagram @NatGeoYourShot and follow along for hashtag challenges ...