Notebook

  1. Animals

    Surprise! This shark looks like a male on the outside, but it’s made babies

    External male reproductive organs hid internal female capacity to give birth among hermaphrodite sharks in India.

    By
  2. Health & Medicine

    Air pollution is triggering diabetes in 3.2 million people each year

    A new study quantifies the link between smoggy air and diabetes.

    By
  3. Health & Medicine

    Finally, there’s a way to keep syphilis growing in the lab

    Scientists have figured out how to keep a sample of the bacteria Treponema pallidum alive and infectious for over eight months.

    By
  4. Earth

    Earth’s rivers cover 44 percent more land than we thought

    A global survey of rivers and streams based on satellite data suggests that these waterways traverse about 773,000 square kilometers.