A dangerously low oxygen level—usually below 92%—can cause shortness of breath, confusion, chest pain, or fainting. It’s ...

Fig.1: Tempo and mode in the body size evolution of Cambrian-Ordovician trilobites. Changes in maximum size (red) and mean size (blue) for each time slice, with lines and shading representing the mean ...

Body mass and cell size are major factors in a fish’s ability to withstand temperature-dependent, low-oxygen environments. Fish worldwide are being plagued by larger and more frequent episodes of ...

Cell culture is not always conducted in a manner that preserves physiological relevance and optimizes cellular health. In particular, oxygen availability during in vitro culture is often excessive, as ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Scattered across an abyssal plain known as the Clarion-Clipperton Zone (CCZ) are polymetallic nodules ...

As a lifelong health and fitness enthusiast with 15 years of experience, Rachel MacPherson is passionate about cutting through fads and noise. Her aim is to clearly communicate health information with ...