Uncategorized

  1. Earth

    Sea levels erratic during latest ice age

    Mineral crusts deposited 81,000 years ago in a Mediterranean island’s caves suggest an abrupt jump in sea level.

    By Sid Perkins
  2. Health & Medicine

    Mutations may underlie some stuttering

    Defects in three genes governing basic cell metabolism are found in a portion of cases, researchers find.

    By Nathan Seppa
  3. Space

    Bouncing sands explain Mars’ rippled surface

    A new study finds that dunes and ridges can form without much wind on the Red Planet.

    By Lisa Grossman
  4. Anthropology

    Ancient DNA points to additional New World migration

    Scientists have extracted a nearly complete genome from the hairs of a 4,000-year-old man, suggesting a new scenario for Asian migrations into the New World.