• Why do we have blood types?

    More than a century after their discovery, we still don’t really know what blood types are for. Do they really matter? Carl Zimmer investigates.

  • The mirror man

    Phantom pain, experienced in missing limbs, tortures amputees and puzzles scientists. Srinath Perur cycles round Cambodia with a man who treats it with mirrors.

  • Next Tuesday on Mosaic

    Until: Would you want to live forever?

    Do you want to live to 100? 1000? Meet a man seeking immortality, leading age research scientists, the very young and the very old as they grapple to decide the right age to die in Until, a journey of the lifetime.