Ocean
Oceans cover 70 percent of the Earth. This is the latest on protecting their vast ecosystems.
Latest in Ocean
![El Nino 2023 signs on NASA weather satellite data on higher Pacific Ocean temperatures and water levels, marked by red around the equator](https://www.popsci.com/wp-content/uploads/2023/05/19/el-nino-2023-weather-satellite.jpg?w=800)
Climate Change
El Niño is back—here’s what that means
![A mangrove tree in Florida to represent blue carbon and the ocean's power to fight climate change](https://www.popsci.com/wp-content/uploads/2023/04/17/Depositphotos_271721212_XL-scaled-e1681748021532.jpg?w=675)
Climate Change
Blue carbon is a natural climate solution with big potential
![Ocean waves crashing on rocky shoreline on cloudy day.](https://www.popsci.com/wp-content/uploads/2023/04/10/Depositphotos_156124040_XL.jpg?w=800)
Climate Change
Pendulums under ocean waves could prevent beach erosion
![Icebergs over the ocean in Greenland.](https://www.popsci.com/wp-content/uploads/2023/04/06/Glaciers.png?w=800)
Climate Change
Antarctic ice can melt 20 times faster than we thought
![Lichens may help forecast sea level rise](https://www.popsci.com/wp-content/uploads/2023/03/03/My-project-2023-03-03T124013.792.jpg?w=800)
Climate Change
Lichens may help forecast sea level rise
![Research student holding graphene seaweed hydrogel in gloved hand](https://www.popsci.com/wp-content/uploads/2023/03/02/Low-Res_University-of-Sussex-research-student-Adel-Aljarid-holding-graphene-seaweed-hydrogel.-So-soft-its-conforming-to-his-hand.png?w=800)
Conservation
MasterChef inspired an edible medical sensor
![A pink wave curs in the Pacific Ocean.](https://www.popsci.com/wp-content/uploads/2023/01/30/PinkWave-1.png?w=800)
Conservation
Gnarly pink waves crash near San Diego
![Red and white lighthouses being submerged by sea level rise. Illustration.](https://www.popsci.com/wp-content/uploads/2022/10/31/lighthouse1.png?w=600)