Animals
- 			 Life LifeHow horses lost their toesFossils reveal that as horses evolved to have fewer toes, they also got stronger and faster. 
- 			 Paleontology PaleontologyThis ancient sea worm sported a crowd of ‘claws’ around its mouthA newly discovered species of arrow worm that lived over half a billion years ago had about twice as many head spines as its modern kin. 
- 			 Animals AnimalsGiant larvaceans could be ferrying ocean plastic to the seafloorGiant larvaceans could mistakenly capture microplastics, in addition to food, in their mucus houses and transfer them to the seafloor in their feces. 
- 			 Animals AnimalsThese spiders crossed an ocean to get to AustraliaThe nearest relatives of an Australian trapdoor spider live in Africa. They crossed the Indian Ocean to get to Australia, a new study suggests. 
- 			 Life LifePolluted water: It’s where sea snakes wear blackReptile counterpart proposed for textbook example of evolution favoring darker moths amid industrial soot. By Susan Milius
- 			 Astronomy AstronomyWhat do plants and animals do during an eclipse?A citizen science experiment will gather the biggest dataset to date of animal responses to a total eclipse. 
- 			 Animals AnimalsWhy midsize animals are the fastestNew analysis delves into the mystery of why medium-sized animals are speedier than bigger ones. 
- 			 Animals AnimalsA lot of life on planet Earth is awful and incredibleActing Editor in Chief Elizabeth Quill discusses how the natural world feeds our sense of wonder. 
- 			 Animals AnimalsReaders fascinated by critters’ strange biologyReaders responded to fish lips, monkey brains, sunless tanner and more. 
- 			 Animals AnimalsTicks are here to stay. But scientists are finding ways to outsmart themResearchers acknowledge that there’s no getting rid of ticks, so they are developing ways to make them less dangerous. By Susan Milius
- 			 Animals AnimalsFossil find suggests this ancient reptile lurked on land, not in the waterAn exquisitely preserved fossil shows that an ancient armored reptile called Eusaurosphargis dalsassoi wasn’t aquatic, as scientists had suspected. 
- 			 Animals AnimalsThese record-breaking tube worms can survive for centuriesDeep-sea tube worms can live decades longer than their shallow-water counterparts.