Animals
- 			 Life LifeLosing genes may have helped whales’ ancestors adapt to life under the seaJettisoning genes tied to saliva and the lungs, among others, could have smoothed ancient cetaceans’ land-to-water transition 50 million years ago. 
- 			 Life LifeCats may have ‘attachment styles’ that mirror people’sIn a new study, 65 percent of felines formed secure attachments with their owners. Like people, other cats were ambivalent or avoidant. By Sofie Bates
- 			 Life LifeWe’ve lost 3 billion birds since 1970 in North AmericaScientists estimated the change in total number of individual birds since 1970. They found profound losses spread among rare and common birds alike. 
- 			 Life LifeClimate change may be throwing coral sex out of syncSeveral widespread corals in the Red Sea are flubbing cues to spawn en masse. By Susan Milius
- 			 Agriculture AgricultureBirds fed a common pesticide lost weight rapidly and had migration delaysScientists have previously implicated neonicotinoid pesticides in declining bee populations. Now a study suggests that songbirds are affected, too. By Maanvi Singh
- 			 Life LifeHuman meddling has manipulated the shapes of different dog breeds’ brainsBy analyzing the shape of different dog breeds’ brains, researchers show how humans have manipulated the animals’ brain anatomy. 
- 			 Life LifeFly fossils might challenge the idea of ancient trilobites’ crystal eyesFossilized crane flies from 54 million years ago probably got their crystal lenses after death. By Susan Milius
- 			 Life Life50 years ago, scientists thought they knew why geckos had sticky feet50 years ago, scientists thought gecko feet had suction cups that allowed the animals to stick to surfaces. Today we know tiny hairs do the job. By Kyle Plantz
- 			 Life LifeFecal transplants might help make koalas less picky eatersPoop-transplant pills changed the microbial makeup of koalas’ guts. That could allow the animals to adapt when a favorite type of eucalyptus runs low. 
- 			 Animals AnimalsWhy one biologist chases hurricanes to study spider evolutionFor more rigorous spider data, Jonathan Pruitt rushes into the paths of hurricanes. By Susan Milius
- 			 Life LifeBig and bold wasp queens may create more successful coloniesA paper wasp queen’s personality and body size could help predict whether the nest she has founded will thrive. 
- 			 Life LifeA mussel poop diet could fuel invasive carp’s spread across Lake MichiganAsian carp, just a human-made waterway away from reaching Lake Michigan, could live in much more of the lake than previously thought.