The air we breathe is a mixture of different gases made up of 78.1% (by volume) nitrogen, 21% oxygen, 0.9% argon, and 0.04% carbon dioxide. Oxygen is the most abundant gas in the atmosphere, essential ...

Bronchitis is an infection of the tubes that lead to the lungs. It can be acute or chronic. Symptoms include a cough and wheezing. Smoking is a major risk factor. Find out more.

Chronic bronchitis is a serious lung disease and a type of chronic obstructive pulmonary disease (COPD). Acute. It can last one to three weeks. It's usually caused by cold or flu viruses.

Many children continue to experience respiratory symptoms up to 14 years after treatment for protracted bacterial bronchitis, ...

Nail clubbing may seem like a harmless change in your fingertips, but it can signal serious underlying conditions affecting the lungs, heart, or gut. Though often painless, it is your body’s subtle ...

When it comes to manicures, we can't say no to holiday-themed nails. And, during summer, that means going all out and getting festive with nail designs for the Fourth of July. Inside, find 4th of ...

50 Preppy Nails for a Classic, Chic Look originally appeared on Parade. "Preppy" can be interpreted many different ways, but is generally thought of in the Ivy League sense. You know what I mean ...

A groundbreaking wireless implant promises real-time, personalized pain relief using AI and ultrasound power no batteries, no wires, and no opioids. Designed by USC and UCLA engineers, it reads ...

Disappearing nail bed is a condition in which the nail bed shortens and narrows. It results from prolonged untreated onycholysis. Learn more here.

From Tiffany Blue to iridescent shimmers, celebrity nail artists Gina Edwards and Tom Bachik break down the 13 biggest nail color trends that will be huge in 2025.

Chronic inflammation articles from across Nature Portfolio Chronic inflammation refers to a prolonged inflammatory response that involves a progressive change in the type of cells present at the ...