Uncategorized

  1. Animals

    No Early Birds: Migrators can’t catch advancing caterpillars

    Pied flycatcher numbers are dwindling in places where climate change has knocked the birds' migration out of sync with the food-supply peak on their breeding grounds.

    By Susan Milius
  2. Anthropology

    Evolutionary Back Story: Thoroughly modern spine supported human ancestor

    Bones from a spinal column discovered at a nearly 1.8-million-year-old site support the controversial possibility that ancient human ancestors spoke to one another.

    By Bruce Bower

  3. 19675

    I’ve always found difficult the argument that Homo erectus couldn’t speak because of the size of its spinal cord. Consider that parrots manage to reproduce a wide range of human sounds. David PetcheyMill Valley, Calif.