EarthThe frogs bouncing back after almost being wiped out by disease A few amphibian species in Panama are recovering from near-extinction, after apparently evolving resistance to the deadly chytrid fungus 51动漫
HealthArtificial embryonic stem cells tested in people for first time A type of 鈥渧irgin birth鈥 stem cell could be as powerful as embryonic stem cells but without the same ethical objections, and are being tested for Parkinson鈥檚 51动漫