Earth
First breath: Earth’s billion-year struggle for oxygen
What happened in the aeons between the first whiff of the gas from bacteria and air we could breathe? A frozen globe and stinking oceans, for starters
Features
Life
Survival of the fittest theory: Darwinism’s limits
Opinion
Environment
Peter Pan ways make bonobos the most amiable of apes
News
Life
I, virus: Why you’re only half human
Features
Health
We’re built to run barefoot, on our tip-toes
News
Environment
Bats and dolphins separately evolved same sonar gene
News
Life
Horizontal and vertical: The evolution of evolution
Features
Environment
Alligators’ bird breath may explain dinosaurs’ triumph
News
Earth
Coral reefs are most fecund cradles of diversity
News
Life
Oldest footprints of a four-legged vertebrate discovered
New evidence that vertebrates walked on Earth some 10 million years earlier than previously believed could change our ideas of where they evolved
News
Environment
Respect for elders ‘may be universal’ in primates
News
Environment
Chimp’s dance suggests a mental grasp of fire
News
Humans
Ducks fight the battle of the sexes in their genitals
News
Humans
Richard Wrangham: Cooking is what made us human
Opinion