Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth that regrow throughout their ...

Far below the ocean’s surface, tiny plastic fragments are accumulating in thick, drifting clouds that rival any garbage patch at the top of the sea. What once looked like a surface litter problem is ...

Aerial view of workers removing sargassum from the shore of Playa del Carmen Beach in the state of Quintana Roo, Mexico, on June 18, 2025. Credit - Elizabeth Ruiz—AFP/Getty Images The recent United ...