Uncategorized

  1. Health & Medicine

    Under very rare conditions, Alzheimer’s disease may be transmitted

    Alzheimer’s isn’t contagious. But contaminated growth hormone injections caused early-onset Alzheimer’s in some recipients, a new study suggests.

    By Laura Sanders
  2. Humans

    Here’s why COVID-19 isn’t seasonal so far

    Human immunity and behavior may be more important than weather for driving seasonality when it comes to COVID-19.

    By Tina Hesman Saey
  3. Climate

    Cold, dry snaps accompanied three plagues that struck the Roman Empire

    New climate data for ancient Italy point to temperature and rainfall influences on past infectious disease outbreaks.

    By Bruce Bower
  4. Animals

    What parrots can teach us about human intelligence

    By studying the brains and behaviors of parrots, scientists hope to learn more about how humanlike intelligence evolves.