Becoming Human

  1. Humans

    The last common ancestor of humans and chimps probably wasn’t much like either

  2. Killer whales, grandmas and what men want: Evolutionary biologists consider menopause

    Menopause seems like a cruel prank that Mother Nature plays on women. First come the hot flashes, night sweats, vaginal dryness, irregular periods, irritability and weight gain. Then menstruation stops and fertility ends. Why, many women ask, must they suffer through this? Evolutionary biologists, it turns out, ask themselves more or less the same question. […]

  3. Anthropology

    Human ancestors scrambled to their feet, a new explanation for bipedalism asserts

  4. Humans

    Eruption early in human prehistory may have been more whimper than bang

    If Hollywood’s right, the apocalypse will be brutal. Aliens, nuclear war, zombies, plague, enslavement by supersmart robots — none of them are good endings. Some archaeologists, however, believe an apocalypse has already come and gone. About 75,000 years ago, they say, a monster volcanic eruption nearly wiped out humankind, leaving behind only a few thousand people to […]

  5. Humankind’s destructive streak may be older than the species itself

    Some scientists have proposed designating a new geological epoch, the Anthropocene, that would cover the period since humans became the predominant environmental force on the planet. But when would you have it begin? Some geologists argue that the Anthropocene began with the Industrial Revolution, when fossil fuel consumption started influencing climate. Others point back several […]