Animals
- 			 Health & Medicine Health & Medicine‘Outbreak’ puts the life cycle of an epidemic on displayAt the Smithsonian National Museum of Natural History, the exhibit “Outbreak” highlights how infectious diseases shape our world. 
- 			 Animals AnimalsThe first land-walking vertebrates may have emerged from salty estuariesEarly tetrapods were transitional creatures — not only between land and water, but also between fresh and salty environments. 
- 			 Paleontology PaleontologyOldest known lizard fossil pushes group’s origins back 75 million yearsCT scan reveals hidden identity of an unusual lizard fossil found years ago in the Italian Alps. By Susan Milius
- 			 Science & Society Science & SocietyReaders respond to pesticides, Hawking radiation and moreReaders had questions about pesticides, Hawking radiation and the intersection of science and the public. 
- 			 Life LifeSkeletons come in many shapes and sizesIn Skeletons, two paleobiologists recount how and why skeletons evolved, as well as the variety of forms they take and the many purposes they serve. By Sid Perkins
- 			 Animals AnimalsPregnant bonobos get a little delivery help from their friendsAs in humans, female bonobos become helpers for mothers giving birth, data from captive apes suggest. By Bruce Bower
- 			 Animals AnimalsA caterpillar outwits corn defenses by gorging on fattening ‘junk’ foodThe crop plants defend themselves with zombie-maker wasps, but one pest has a desperate work-around. By Susan Milius
- 			 Earth EarthKeeping global warming to 1.5 degrees C helps most species hold their groundHolding global warming to 1.5 degrees Celsius by 2100 could help protect tens of thousands of insect, plant and vertebrate species. 
- 			 Animals Animals50 years ago, scientists warned of a sparrow’s extinctionOnly 17 dusky seaside sparrows remained in 1968. Today, there are none. 
- 			 Animals AnimalsGreen blood in lizards probably evolved four timesPigment buildups that would cause jaundice in people are normal for some New Guinea skinks. By Susan Milius
- 			 Animals AnimalsReaders amazed by Jupiter discoveries, giant viruses and moreReaders had questions about the latest findings of Jupiter, giant viruses being recognized as a new kingdom of life and tardigrade poop. 
- 			 Animals AnimalsHow a deep-sea geology trip led researchers to a doomed octopus nurseryA healthy population of cephalopods could be hiding nearby, though, a new study contends.