ScienceIQ.com

What Happens at the Edge of a Black Hole?

The greatest extremes of gravity in the Universe today are the black holes formed at the centers of galaxies and by the collapse of stars. These invisible bodies can be studied by examining matter swirling into them, and by listening to the waves of distortion they make in spacetime. New data from X-ray satellites, such as NASA's Chandra X-ray ...

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EdgeofaBlackHole
Geology

Is The Sea Really On The Level?

When we measure the height of mountains, we measure from a constant number called sea level. For instance Mount Whitney in California is 14,494 feet (4,418 m) above sea level. We start at 0 feet and ... Continue reading

SeaLevel
Medicine

What is Asthma?

In many people, asthma appears to be an allergic reaction to substances commonly breathed in through the air, such as animal dander, pollen, or dust mite and cockroach waste products. The catch-all ... Continue reading

WhatisAsthma
Biology

Botrytis: The Noble Rot

Gray mold is a common disease of small fruits (e.g. strawberries) and flowers (e.g. petunias) in warm, humid weather. It is caused by the fungus Botrytis cinerea, which produces huge numbers of ... Continue reading

BotrytisTheNobleRot
Engineering

Airbags

An automobile airbag is a safety device: its sole purpose is to prevent an occupant of the vehicle from impacting with the surrounding structure. Typically, in a collision, Newton's laws of motion ... Continue reading

Airbags

Smallpox, Chickenpox . . . Monkeypox?

SmallpoxChickenpoxMonkeypoxThis past summer a few people in the midwest came down with monkeypox, a viral disease related to smallpox but less infectious and a lot less deadly to humans. Oddly they all seem to have caught the disease from domesticated prairie dogs, which have become increasingly popular as pets. Like chickenpox, monkeypox causes fever, swollen lymph nodes, and a rash. Like smallpox and chickenpox, the spots can leave scars. Most people recover from monkeypox, but it is occasionally deadly.

Monkeypox is not usually found in North America. It is normally found in the rainforests of Africa, where it infects squirrels, rodents (and of course monkeys). It is assumed that the Wisconsin prairie dogs caught it at the pet store from exotic pets imported from Africa, possibly giant gambian rats (yes, some people consider these pets).

To prevent the virus from entering the wild rodent population in this country, the Centers for Disease Control banned the importation of rodents from Africa and set out strict guidelines for handling and quarantining suspected cases in pets. By the end of July there had been 37 confirmed monkeypox cases in humans, but there have been no more cases in this country since then.