roses mar

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Brains Sweep Themselves Clean Of Toxins During Sleep

While the brain sleeps, it clears out harmful toxins, a process that may reduce the risk of Alzheimer's, researchers say.<p>During sleep, the flow of cerebrospinal fluid in the brain increases dramatically, washing away harmful waste proteins that build up between brain cells during waking hours, a …

Can We Eat Our Way To A Healthier Microbiome? It's Complicated

When our colleague Rob Stein got his microbiome analyzed recently in the name of science journalism, we were totally fascinated.<p>As Stein noted, it may be possible to cultivate a healthier community of bacteria on and inside us by modifying our diets.<p>Stein was advised to eat more garlic and leeks …

FYI: Why Do Leaves Turn Different Colors?

The burning question of the season<p>Leaves are loaded with chlorophyll, which makes them green. But all green plants also carry a set of chemicals called carotenoids. On their own, these look yellow or orange—carotenoids give color to corn and carrots, for example—but they’re invisible beneath the …

Florida International University

Mysterious Ancient Indian Metal Works Surpass Modern Technology

What is amazing about the Iron Pillar of Delhi is that, in spite of being at least 1,500 years old and possibly much older, it is so impenetrable to …

Archaeology

Why do jellyfish sting?

You're swimming in the sea, and all of a sudden a jellyfish appears from nowhere and stings you. Why did they do it?<p>Jellyfish use their sting to capture prey and act as a defence mechanism. When their tentacles encounter a human or other sort of prey they reach out and fire out harpoon-like …

Nature

The Shape of Your Head and the Shape of Your Mind

How the archaic study of brain shape and head reading — the origin of terms like “highbrow” and “lowbrow,” “well rounded,” and “shrink” — shaped the modern obsession with the mind. One reason phrenology attracted so many followers was that it seemed to provide the toolbox for the American dream.<p>To …

Gorgeous glass sculptures let you see into the world's most deadly viruses

Viruses are usually depicted as ugly, scary, almost weapon-like blobs just waiting to meddle inside of your body, but Luke Jerram sees them as something different. There isn't really a color to viruses after all — they're smaller than the wavelength of visible light — and as mere smears when viewed …

Tech and Science

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Science

The Truth About The Left Brain / Right Brain Relationship

Sometimes ideas that originate in science seep out into the broader culture and take on a life of their own. It's still common to hear people referred to as "anal," a Freudian idea that no longer has much currency in contemporary psychology. Ideas like black holes and quantum leaps play a …

A Cybernetic Implant That Repairs Brain Damage

There may be an answer for people suffering from traumatic brain injuries. It's a device called a brain-machine-brain interface — and it has the …

The Brain

Drug Hopes to Delay Onset of Alzheimer's Symptoms With a Monthly Shot in the Arm

Alzheimer’s disease is on the rise, even as doctors continue to struggle to find potential treatments for it. Researchers expect the number of those …

This gene helps some of us never forget a face - Futurity

New research may help explain why a few people remember almost everyone they have met while others have difficulty recognizing members of their own …

Physiology

The Woman Who Could Write, But Couldn't Read

A recent stroke left one 40-year-old woman with some unusual symptoms.<p>One morning, a kindergarten teacher was about to take attendance for her class when she realized she couldn't read the paper in her hands. She tried looking over her lesson plans, but like the attendance sheet, they seemed to be …

Conjoined Whales Found in Mexico

Scientists working in Mexico's Laguna Ojo de Liebre made a startling discovery on Sunday: a pair of conjoined gray whales floating in the surf.<p>Researchers believe that the conjoined twins probably did not survive birth and were likely miscarried by their mother. The whales are noticeably …

Whales

Cholesterol linked to brain changes that cause Alzheimer's disease

Reducing the amount of bad cholesterol and increasing good cholesterol you eat may help to reduce the risk of Alzheimer's disease, a new study suggests<p>High levels of unhealthy cholesterol may contribute towards one of the key signs of Alzheimer’s disease developing in the brain.<p>Researchers have …

Mapping Emotions On The Body: Love Makes Us Warm All Over

Close your eyes and imagine the last time you fell in love. Maybe you were walking next to your sweetheart in a park or staring into each other's eyes over a latte.<p>Where did you feel the love? Perhaps you got butterflies in your stomach or your heart raced with excitement.<p>When a team of scientists …