News

  1. Earth

    The mysterious Hiawatha crater in Greenland is 58 million years old

    An impact crater spotted in 2015 in Greenland is far too old to be connected to the Younger Dryas cold snap from 13,000 years ago, a study suggests.

    By Carolyn Gramling
  2. Animals

    Genetically modified mosquitoes could be tested in California soon

    The EPA also OK’d more trials in Key West, Fla. Both states now get their say in whether to release free-flying Aedes aegypti to sabotage their own kind.

    By Susan Milius
  3. Genetics

    An extinct rat shows CRISPR’s limits for resurrecting species

    Scientists recovered most of the Christmas Island rat’s genome. But the missing genes signal a problem for using gene editing to de-extinct species.