Uncategorized

  1. Paleontology

    Sloths once came in a dizzying array of sizes. Here’s why

    A new fossil and DNA analysis traces how dozens of sloth species responded to climate shifts and humans. Just two small tree-dwelling sloths remain today.

    By Carolyn Gramling
  2. Health & Medicine

    It’s tricky to transplant a bladder. How surgeons finally did it

    The person who received the bladder is doing well, and the successful transplant could offer hope to thousands of people with bladder dysfunction.

    By Payal Dhar
  3. Climate

    Penguin poop gives Antarctic cloud formation a boost

    Penguin poop provides ammonia for cloud formation in coastal Antarctica, potentially helping to mitigate the impacts of climate change in the region.