Ecosystems
- 			 Climate ClimateSome leaves in tropical forests may be getting too hot for photosynthesisClimate change may be forcing some tropical leaves to stop photosynthesis and die. It’s still unclear what effect this will have on entire forests. By Nikk Ogasa
- 			 Ecosystems EcosystemsThis seagrass is taking over the Chesapeake Bay. That’s good and bad newsHigher water temperatures are wiping out eelgrass in the Chesapeake Bay and weedy widgeongrass is expanding. Here’s why that seagrass change matters. By John Carey
- 			 Climate ClimateThe snow forest of North America may be about to shrinkFrom 2000 to 2019, the boreal forest’s northern boundary didn’t move while southern tree cover thinned due to climate change, wildfires and logging. By Nikk Ogasa
- 			 Ecosystems EcosystemsThe Amazon might not have a ‘tipping point.’ But it’s still in troubleScientists race to foretell the fate of the vast forest facing deforestation and climate change. By Nikk Ogasa
- 			 Ecosystems EcosystemsMarjorie Weber explores plant-protecting ants and other wonders of evolutionCooperation across the tree of life is an understudied driver of evolution and biodiversity, Marjorie Weber says. By Meghan Rosen
- 			 Life Life5,000 deep-sea animals new to science turned up in ocean recordsScientists compiled a list of animals unknown to science that live in a deep-sea Pacific Ocean ecosystem targeted for mining exploration. By Jude Coleman
- 			 Climate ClimateThawing permafrost may unleash industrial pollution across the ArcticAs the frozen ground warms due to climate change, industrial pollutants could flow free from thousands of sites across the Arctic. By Nikk Ogasa
- 			 Earth EarthA massive cavern beneath a West Antarctic glacier is teeming with lifeA subglacial river has carved out the cavern beneath the Kamb Ice Stream, a West Antarctic glacier, and may be supplying nutrients necessary for life. By Douglas Fox
- 			 Animals AnimalsFreshwater leeches’ taste for snails could help control snail-borne diseasesA freshwater leech species will eat snails, raising the possibility that leeches could be used to control snail-borne diseases that infect humans and livestock. 
- 			 Animals AnimalsThe last leg of the longest butterfly migration has now been identifiedAfter a long journey across the Sahara, painted lady butterflies from Europe set up camp in central Africa to wait out winter and breed. 
- 			 Animals AnimalsA ‘fire wolf’ fish could expand what we know about one unusual deep-sea ecosystemUnlike other known methane seeps, Jacó Scar is slightly warmer than the surrounding water and is a home for both cold-loving and heat-loving organisms. 
- 			 Environment EnvironmentThe Deepwater Horizon oil spill ruined long-term shore stabilityFor at least eight years, the oil disaster continued to kill soil-retaining marsh plants along the Louisiana coast, accelerating shoreline loss.