Circumcision the most hotly debated surgical procedure in medicine

Opponents of circumcision have always challenged the health risks by stating that good hygiene negates the necessity of circumcision and all but eliminates the risk of infection and cancer. The debate on both sides of the fence has been heated. Over the years medical reports have appeared to support the anti-circumcision point of view. Now comes another study which supports the stand of the anti-circumcision …

Clouds are white or different colors. Why?

My question is, why are the clouds white? At midday, when the sun is high in the sky or the clouds, light scattered off the water droplets in clouds is composed of all the colors of the rainbow. When you mix every color of visible light — all the reds and greens and yellows and blues — you see white. On the other hand, at sunset, the …

What creates the “washboard effect” on dirt roads?

A question from Viron Fessler of Gaston, Oregon. He writes: “We live on a gravel road. Every summer, during the dry season, the road develops ‘waves’ or ‘ripples.’ The peaks of the waves are about 10 inches apart, with matching dips. These ripples can get around 3 inches high. What creates this effect?” These are sometimes called “washboard roads” — and they’re the bumpy bane …

How do herds form?

Nature enthusiasts are fascinated by herds of animals like elephants and elk But you’ll probably never see a herd of cats. Why some animals gather together as herds? Many animals display herding — or group-forming — behavior . There are three main ideas as to why. Protection from predators is probably the main reason. With more bodies, there are more eyes to watch for danger. …

Asteroid Frog Extinction

Scientists think that amphibians are rapidly disappearing around the world because of their sensitivity to environmental changes. So how did frogs outlive the dinosaurs? You talk about an asteroid causing the extinction of the dinosaurs, but what about frogs? Frogs are a very delicate species, greatly affected by changes in their climate. The fossil record shows that — 65 million years ago — perhaps half …

Why do octopuses have three hearts?

Are three hearts better than one? And is it possible to sleep underwater? The answer to both questions is yes — if you’re an octopus. Octopuses need all three hearts to circulate blood through their bodies. Two of the hearts are called branchial hearts. They sit right behind the eyes and are connected to an octopus’s gills, where oxygen gets into its blood. From there, …

The survival tactics of horned lizards

In the mid-16th century, when Spain sent its first scientific explorers to Mexico, Francisco Hernandez reported seeing a lizard squirt blood from its eyes. Horned lizards — found primarily in Mexico and the American Southwest. Imagine a horned lizard — fat and brown with horns pointing from the back of its head — sitting in the sand. It sees a fox approaching. The lizard sits …

Ocean Guilds

The great white shark and the Salmon shark are closely related — each part of what’s called a shark “guild.” Up next — a scientist talks about tracking the movements of shark guilds. Speaking with Randy Kochevar, a scientist with California’s Monterey Bay Aquarium. Kochevar is principle investigator of TOPP — the Tagging of Pacific Pelagics project. It uses electronic tags to track the largest predators …

Ancient Microbes

For decades, scientists assumed that Antarctica‘s Lake Vida was entirely frozen — and devoid of life. But Peter Doran suspected there might be liquid water — and even life — at the bottom of the lake. Peter Doran is an Earth scientist at the University of Illinois at Chicago. In 1996, he sampled the thick layer of ice covering Antarctica‘s enormous Lake Vida. He found …

Yoruba names for herbs and plants – Nigerian medicine

Yoruba Medicine – History  The medical traditions of the Yoruba people of western Nigeria developed within a culture that deeply respects and venerates ancestors. The orishas, or gods of the Yoruba, were former ancestors such as Oduduwa, the legendary ancestor of all Yoruba people, and his son Ogun. Respect for family and ancestors is so deep that when Yoruba people die, they are buried under …

ACNE – how to get rid of pimples

Description * Also known as pimples or zits. Acne is the most common of all skin problems. It occurs most commonly on the face, and to a lesser extent on the back, shoulders and chest. Acne is more common during adolescence, although premenstrual or mid-cycle women may also develop pimples. * Acne appears in three forms: – Acne vulgarus – the hair follicles and sebaceous …

A Fishy Tale: Part 5

Why Act Now? Now is the crucial time to act on Genetic Engineering in general, and GE aquaculture -specifically- for the following 9 reasons: Many Wild populations, such as the Atlantic Salmon, already face extinction due to non-GE aquaculture. Yet the risks of GE fish-farming surpass even the risks of other types of aquaculture- like over-fishing. Companies have huge plans for the future of this untapped GE resource:For …