Ecosystems
- 			 Animals AnimalsChytrid’s frog-killing toll has been tallied — and it’s badLosses due to the amphibian-killing chytrid fungus are “the greatest documented loss of biodiversity attributable to a pathogen,” researchers find. 
- 			 Animals Animals‘Epic Yellowstone’ captures the thriving ecosystem of the world-famous parkA new documentary series about Yellowstone displays the dynamic, dramatic and exciting ecosystem that thrives within the park’s gates. By Jeremy Rehm
- 			 Climate ClimateWhat happens when the Bering Sea’s ice disappears?Record-low sea ice in 2018 sent ripples through the Bering Sea’s entire ecosystem. Will this be the region’s new normal? 
- 			 Oceans OceansTiny bits of iron may explain why some icebergs are greenScientists originally thought the green hue of some icebergs came from carbon particles. Instead, iron oxides may color the ice. By Jeremy Rehm
- 			 Animals AnimalsWhat spiders eating weird stuff tell us about complex Amazon food websBy documenting rare events of invertebrates eating small vertebrates, scientists are shedding new light on the Amazon rainforest’s intricate ecosystem. By Jeremy Rehm
- 			 Animals AnimalsHermit crabs are drawn to the smell of their own deadA new study finds that the smell of hermit crab flesh attracts other hermit crabs of the same species desperately looking for a larger shell. By Yao-Hua Law
- 			 Animals AnimalsPoison toilet paper reveals how termites help rainforests resist droughtNovel use of poisoned toilet paper rolls and teabags led to discovery that termites help tropical forests resist droughts. By Yao-Hua Law
- 			 Oceans OceansFloating seabirds provide a novel way to trace ocean currentsSeabirds idly drifting with ocean currents provide a novel way to track and understand how these flows change with time and location. By Jeremy Rehm
- 			 Animals AnimalsPea aphid youngsters use piggyback rides to escape a crisisWhen some mammal is about to munch their plant, aphids drop to the ground and youngsters want a ride to safety. By Susan Milius
- 			 Ecosystems EcosystemsBeavers are engineering a new Alaskan tundraClimate change has enabled the recent expansion of beavers into northwestern Alaska, a trend that could have major ecological consequences for the region in the coming decades. By Sid Perkins
- 			 Agriculture Agriculture50 years ago, screwworm flies inspired a new approach to insect controlThe United States has wiped out screwworm flies repeatedly since 1966 using the sterile male eradication technique. By Kyle Plantz
- 			 Ecosystems EcosystemsHow mammoths competed with other animals and lostMammoths, mastodons and other ancient elephants were wiped out at the end of the last ice age by climate change and spear-wielding humans.