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

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

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

This daily feast-and-famine cycle in oxygen availability created an intense physiological challenge for early animals, forcing them to develop adaptations to handle fluctuations in nutrients. For ...

Microbial organisms dominate life on Earth, but tracing their early history and evolution is difficult because they rarely ...

But with overall warming due to climate change, the study found that Lakes Michigan and Huron don't consistently separate into layers — or stratify — in the winter anymore. The consequences for ...

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 ...

Follow these simple steps for a more youthful appearance. Get Youthful Skin With Moisturizer “As our skin matures, there is a ...

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