A tiny salmon parasite has become the first animal proven to survive without oxygen, overturning long-held biology ...

At 62, Tom Cruise is shattering expectations in Hollywood, performing death-defying stunts like clinging to planes and ...

Breathing acts as a pacemaker for our brains, so if you find your mind running wild with stress and worry, it might be time ...

In India alone, several metropolitan areas regularly record dangerously high Air Quality Index (AQI) levels during winter.

Medically reviewed by Mary Choy, PharmD Key Takeaways Nicotine has a half-life of about two hours and can stay in the blood for about one to three days. Cotinine, a byproduct of nicotine, has a ...