What we found on the web about Extinction
In biology and ecology, extinction is the end of an organism or group of taxa. The moment of extinction is generally considered to be the death of the last individual of that ...
An extinction event (also known as: mass extinction; extinction-level event, ELE) is a sharp decrease in the number of species in a relatively short period of time.
A number of extinction concepts are discussed and loosely defined, followed by a survey of some important extinction and "extinction-like" events, primarily from the Phanerozoic.
Dinosaur Extinction - What happened to the dinosaurs? What do the facts reveal? Study the latest concepts and evidence for the disappearance of the dinosaurs.
In biology, the complete disappearance of a species from the planet. Extinctions occur when a species becomes unfit for survival in its natural habitat usually to be replaced by ...
Before this extinction the diversity of large mammals in North America was similar to that of modern Africa. As a result of the extinction, relatively few large mammals are now ...
extinction /ex·tinc·tion/ (eks-tink´shun) in psychology, the disappearance of a conditioned response as a result of nonreinforcement; also, the process by which the ...
noun. a putting out or being put out, as of a fire; a destroying or being destroyed; annihilation; abolition; the fact or state of being or becoming extinct; dying out, as a ...
ex·tinc·tion (k-st ngk sh n) n. 1. a. The act of extinguishing. b. The condition of being extinguished. 2. The fact of being extinct or the process of becoming extinct: "The most ...
Britannica online encyclopedia article on extinction (biology), in biology, the dying out or termination of a species. Extinction occurs when species are diminished because of ...
Jay Williams1 tells about an old woman who was living out the last days of her life. Surrounded by white walls, upon a white bed, in care of doctors and nurses, this dark-skinned ...
Extinction of animals and plants. Read scientific research on the dinosaur extinction, future mass extinctions, and endangered species. What can be done?
Behavioral Extinction Descriptions and Definitions Extinction of operant behavior involves the termination of the reinforcement contingency that maintains the response.
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Through evolution, new species arise through the process of speciation—where new varieties of organisms arise and thrive when they are able to find and exploit an ecological niche—and species become extinct when they are no longer able to survive in changing conditions or against superior competition. A typical species becomes extinct within 10 million years of its first appearance,Newman, Mark. "A Mathematical Model for Mass Extinction". Cornell University. May 20, 1994. URL accessed July 30, 2006. although some species, called living fossils, survive virtually unchanged for hundreds of millions of years. Extinction, though, is usually a natural phenomenon; it is estimated that 99.9% of all species that have ever lived are now extinct. Raup, David M. Extinction: Bad Genes or Bad Luck? W.W. Norton and Company. New York. 1991. pp.3-6 ISBN 978-0393309270

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These recent articles mention Extinction
Guerrilla News Network
At this point, it is absolutely necessary, but probably not sufficient, to bring down the industrial economy. Your medical doctor informs you: “You need to stop all industrial activities immediately, or you’ll be dead in twenty years. And s...
Houston Chronicle
A deal for General Motors Co. to sell Saab to a specialty automaker has collapsed, leaving the storied Swedish brand born from jets in 1947 close to extinction.
Press Trust of India
Kolkata, Nov 29 (PTI) With three species of vultures nearing extinction in India, a conservation programme to breed the natural scavengers in captivity has been taken up at the Rajabhatkhawa centre in north Bengal.
Common Dreams
The coral conservation crisis is already so severe that preventing the extinction of coral reefs and the marine life that depends upon them is an enormous undertaking. The Endangered Species Act has an important role to play in that effort,...
New Kerala
The main goal of the four-day workshop, to be inaugurated by Nepal's Prime Minister Madhav Kumar Nepal, is to define strategic actions to save the wild tiger from extinction. The experts will assess the present situation, challenges and str...
The Independent
Floors-2-Go, the resurrected flooring retailer saved from extinction last year following a pre-pack administration, is close to agreeing an injection of growth capital from new backers. The Birmingham-based group, which was saved by floorin...
The Washington Times
KOURE, Niger A crisp African dawn is breaking overhead, and Zibo Mounkaila is on the back of a pickup bounding across a sparse landscape of rocky, orange soil. The tallest animals on earth are here, the guide says, somewhere amid the scant ...