Each year, three million people have their eye lenses replaced with plastic ones. Artificial lenses are fine, but what if people could regrow their own?
Thanks in part to the wonders of modern medicine, people are living longer than every before. Living to a ripe old age does have its drawbacks, though.
The sad truth about aging, on this Moment of Science.
Picture the large microwaves as a slinky, bouncing around in your microwave oven: the slinky isn’t about to fit through the little holes in the door.