Shannen

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Lack of sleep may shrink your brain

<b>(CNN) —</b> Can a lack of sleep affect the size of your brain? It's possible, a recent study published in an online issue of Neurology suggests.<p>European researchers looked at 147 adults between the ages of 20 and 84. With two MRI scans, they examined the link between sleep problems like insomnia and …

Older People Sleep Less. Now We Know Why.

It's long been known that the older you get, the less you sleep. There are many proposed reasons for why this happens, and they include new medications, psychological distress, retirement or simply the theory that the elderly need less sleep.<p>But a new study from Beth Israel Deaconess Medical Center …

Ageing: The girls who never grow older

A handful of girls seem to defy one of the biggest certainties in life: ageing. Virginia Hughes reports on the families wrestling with a condition they can’t explain, and the scientist who believes that these children could hold the key to immortality.<p>Richard Walker has been trying to conquer …

Vietnam War

Our Incredible Immune System

The human body is a biological marvel. Tasked to protect it is our immune system, which is responsible for detecting and neutralizing a wide variety …

Monitors find confusion, hostility at Malaysia Airlines crash site

International monitors investigating the Malaysia Airlines crash in eastern Ukraine said Friday the team was not given full access to the site and was greeted with hostility by armed men.<p>"There didn't seem to be anyone really in control," Michael Bociurkiw, spokesman for the Organization for …

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