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Biology Explained

Science Fact or Science Fiction? Exercise Is Bad for Arthritis

Science Fact or Science Fiction? Exercise Is Bad for Arthritis

Science Fact or Science Fiction? Exercise Is...

When it comes to the link between exercise and arthritis, the evidence from a wide range of studies strongly suggests that exercise not only improves function among people with arthritis but also helps them control pain better.

Bodily Functions Explained: Itch and Scratch

Bodily Functions Explained: Itch and Scratch

Bodily Functions Explained: Itch and Scratch

Meant to remove invaders, either infectious or simply irritating, a scratch is human skin’s first line of defense.

6 Views of a Neuron by Golgi and Cajal

6 Views of a Neuron by Golgi and Cajal

6 Views of a Neuron by Golgi and Cajal

Camillo Golgi and Santiago Ramón y Cajal stain cells and uncover the intricate secrets of the nervous system.

 Checking Our Gut Microorganisms’ Disease-Fighting Might

Checking Our Gut Microorganisms’ Disease-Fighting Might

Checking Our Gut Microorganisms’ Disease...

New gene sequencing tech is helping researchers harness the bacteria, viruses, and fungi that live in our bodies to fight disease.

Bodily Functions Explained: The Cough

Bodily Functions Explained: The Cough

Bodily Functions Explained: The Cough

It’s an everyday occurrence. A little tickle in your throat, a wayward speck of pollen, perhaps — or a bit of water traveling down the wrong pipe — and then a full-on chain reaction in your body.  ...

The Long And Short Of Aging

The Long And Short Of Aging

The Long And Short Of Aging

The length of our telomeres, the caps on the ends of chromosomes, can predict how well we’re aging.

What a Porcupine Quill Can Teach Us About Making Better Needles

What a Porcupine Quill Can Teach Us About Making Better Needles

What a Porcupine Quill Can Teach Us About...

Taking a design cue from the animal world, mimicking a porcupine quill might help make a more effective—and less painful—needle.

Hungry, Hungry Macrophages (video)

Hungry, Hungry Macrophages (video)

Hungry, Hungry Macrophages (video)

Macrophages, the human immune system’s horde of cells that clear the body’s detritus by eating it, may be induced to gorge — in the name of helping combat Alzheimer’s and other diseases. ...

Your Blood Up Close: 5 Vein’s-Eye Views

Your Blood Up Close: 5 Vein’s-Eye Views

Your Blood Up Close: 5 Vein’s-Eye Views

Get up close and personal with blood — the key to your body’s oxygen transport and immunity — with five peeks inside your veins, featuring molecules seen at thousands of times their actual size.

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