So why do so many life-forms breathe oxygen? There are probably thousands of kinds of metabolisms, or chemical processes that ...

A stroke, sometimes called a brain attack, occurs when a blood vessel that carries oxygen and nutrients to the brain is ...

Rivers, streams, lakes, and reservoirs aren't just scenic parts of our landscape—they're also vital engines for life on Earth ...

Scientists have revived 7,000-year-old algae in a bid to help us understand how climate changes have affected the past.

Growing muscles in a lab usually means a liquid medium to supply nutrients and oxygen to muscle cells seeded on petri dishes or applied to gel scaffoldings. Since these cultured muscles are small ...

We’ve all experienced small mishaps, like scraping a knee or accidentally cutting a hand while slicing a bagel. It can be ...