News

  1. Animals

    A new device helps frogs regrow working legs after an amputation

    A single treatment shortly after adult frogs lost part of their legs spurred regrowth of limbs useful for swimming, standing and kicking.

    By Carolyn Wilke
  2. Health & Medicine

    Will animal-to-human organ transplants overcome their complicated history?

    The elusive goal of using animal organs for transplants could be within reach, but it’s too soon to tell.

    By Laura Beil
  3. Animals

    Gut microbes help some squirrels stay strong during hibernation

    Microbes living in the critters’ guts take nitrogen from urea and put it into the amino acid glutamine, helping squirrels retain muscle in the winter.

    By Erin Garcia de Jesús
  4. Animals

    Urban animals may get some dangerous gut microbes from humans

    Fecal samples from urban wildlife suggest human gut microbes might be spilling over to the animals.