Hello Nature readers, would you like to get this Briefing in your inbox free every day? Sign up here. Credit: Jessie C. Tanner Female Cope’s gray treefrogs (Dryophytes chrysoscelis) struggle to pick the best mates when presented with too much choice. Typically, female treefrogs choose male suitors with the longest calls. When researchers played these
People who live to 110 years and older have large populations of a rare type of immune cell that can kill cancer1, finds a study published today in Cell Reports. It is possible that such cells, called killer T cells, might help people to live to extraordinarily long ages by fighting off cancer — although
