Too many people still miss heart trouble Is your heart healthy? In a 2015 study published in JAMA, eight out of 10 men and women with scarring on their heart muscle—evidence of a previous heart attack ...

A team of scientists with the Sea Mammal Research Unit, School of Biology, University of St Andrews, in the U.K. has found ...

Our blood consists of many cell types that develop through different stages from a precursor type -- the blood stem cell. An international research team has now investigated the developmental pathways ...

Ancient microbes illustrate a particular kind of respiration in which carbon dioxide and hydrogen are combined to form acetic ...

The sea mammals may actually be able to sense the amount of oxygen in their blood—something we humans can't do.

As seals dive more frequently—and for longer—than humans do, the range of carbon dioxide in their bodies varies more widely.

A team of scientists have elucidated an ancient mechanism of cellular respiration. To that end, they studied bacteria that feed on the gases carbon dioxide and hydrogen, and turn them into acetic acid ...

Over a month after being hospitalized, Pope Francis is showing slight improvement as he requires less oxygen flow.

The death of a 5-year-old in a hyperbaric chamber in Michigan has prompted calls for more oversight of hyperbaric oxygen ...