ScienceIQ.com

The Importance Of Clouds And Aerosols To Climate Change

Everything, from an individual person to Earth as a whole, emits energy. Scientists refer to this energy as radiation. As Earth absorbs incoming sunlight, it warms up. The planet must emit some of this warmth into space or increase in temperature. Two components make up the Earth's outgoing energy: heat (or thermal radiation) that the Earth's ...

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CloudsAerosols
Biology

Grizzly Bear, (Ursus arctos horribilis)

A symbol of America's wildlands, the grizzly or brown bear is one of the largest North American land mammals. The grizzly bear's historic range covered much of North America from the mid-plains ... Continue reading

GrizzlyBear
Chemistry

The Melting Point

Physical properties of a material fall into two categories: intrinsic properties determined by the structure of the particular molecule, and bulk properties characteristic of quantities of molecules ... Continue reading

TheMeltingPoint
Astronomy

It's Dusty Out There

There is no lower limit to the size of the solid particles that move around the Sun. Small asteroids grade downward into large meteoroids and then into smaller pebbles and so on down to the tiniest ... Continue reading

ItsDustyOutThere
Biology

Gestation Periods of Mammals

Gestation period is the time from fertilization to the actual birth in animals. In humans this period is 266 days or approximately 9 months. ... Continue reading

GestationPeriodsofMammals

When Did A Cat Become A Kitty?

WhenDidACatBecomeAKittyIt has long been thought that cats were first domesticated in Egypt, about 4000 years ago. Indeed, they were very highly thought of in ancient Egyptian society. It was illegal to kill or harm them, and illegal to export them to other countries. When they died, they were often mummified in the same way as deceased human bodies. In fact, archaeologists working in Egypt have found more cat mummies than human mummies!

Unlike dogs, which are thought to have been domesticated by hunters, cats were domesticated by farmers. Stored grain attracted mice and rats to human settlements, and the ready supply of rodents attracted cats. People were glad to have the cats killing off the mice and rats, and gradually a friendly relationship developed. But in ancient Egypt cats were always free to come and go as they pleased!

New evidence recently published in Science suggests that cats were actually domesticated much earlier, over 9000 years ago, in Cyprus, not Egypt. Cyprus is an island at the eastern end of the Mediterranean Sea, near Turkey. Archaeologists working in Cyprus found a cat skeleton buried near that of a human. The skeleton is complete, showing that the cat was buried shortly after death. It appears to have been buried together with the human remains, perhaps because the dead person’s family regarded the cat as an important individual. Possibly the cat was killed so it could accompany its owner in the afterlife.