These manta rays form ‘friendships’ that last longer than a summer fling By Eva FrederickAug. 22, 2019
‘Mystery’ volcano that cooled the ancient world traced to El Salvador By Katherine KorneiAug. 16, 2019
Fiddler crabs produce more carbon dioxide than their marshy homes can handle By Elizabeth PennisiAug. 15, 2019
Changing sperm speed can influence offspring’s sex, mouse study suggests By Eva FrederickAug. 13, 2019
New addiction research center receives trove of molecules from embattled opioidmaker By Kelly ServickAug. 20, 2019
Funding crisis at Brazilian science agency could leave 80,000 researchers and students without pay By Emiliano Rodríguez MegaAug. 19, 2019
Australian university suspends ancient DNA expert Alan Cooper as part of workplace investigation By Elizabeth CulottaAug. 19, 2019
![Cyclo[18]carbon structure](http://www.sciencemag.org/sites/default/files/styles/grid_thumb_-_290x163__16_9_/public/carbon_1280.jpg?itok=2YDL4Rdq)
