St. Paul Treasure Hunt medallion was found Saturday in Roseville’s Central Park, after the seventh clue had been published. Here are all the clues and their explanations. Clue 1 Santa Ana’s churning, ...

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 ...

Shallow coastal waters are hotspots for methane emissions, releasing significant amounts of this potent greenhouse gas into the atmosphere and contributing to global warming. New research ...