On This Day in History, June 15 features landmark moments spanning law, science, war and culture. From the sealing of Magna ...

Every blood donation carries a story of science, courage, and public health. On World Blood Donor Day, we honor not only the ...

A team of scientists with the Sea Mammal Research Unit, School of Biology, University of St Andrews, in the U.K. has found that gray seals are able to monitor their blood oxygen levels as a means to ...

Dinosaur DNA may still be out of reach, but scientists are uncovering something almost as exciting—ancient blood vessels hidden inside fossilized bones. In a massive Tyrannosaurus rex nicknamed Scotty ...