In a world-first pilot study, researchers from the University of South Australia have used video footage of insects to extract their heart rates without touching or disturbing them.

In the 1966 novel Fantastic Journey, by Isaac Asimov, a miniature submarine and crew travel throughout the human circulatory ...

Your body's circulatory system is a wondrous thing. It's made up of blood vessels that carry blood to and from your heart and also pumps blood to your lungs so you can breathe.

By Jon LaPook February 15, 2023 / 7:07 PM EST / CBS News ...