Uncategorized

  1. Life

    Bacteria fossils hold the oldest signs of machinery needed for photosynthesis

    Microfossils from Australia suggest that cyanobacteria evolved structures for oxygen-producing photosynthesis by 1.78 billion years ago.

    By Tina Hesman Saey
  2. Health & Medicine

    Fetuses make a protein that causes morning sickness in pregnancy

    A hormone called GDF15 triggers a part of the brain involved in nausea and vomiting, a new study finds. Blocking its action may lead to treatments.

    By Tina Hesman Saey
  3. Science & Society

    Most people say self-control is the same as willpower. Researchers disagree

    Psychologists say self-control is about planning ahead to avoid relying on willpower in the moment. Laypeople see things differently.