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Cretaceous-Paleogene Extinction Event - Wikipedia, the free encyclopedia
Cretaceous-Paleogene (K-Pg) extinction event, also known as the Cretaceous-Tertiary (K-T) extinction,[b] was a mass extinction of some three-quarters of plant and animal species on Earth-including all non-avian dinosaurs-that occurred over a geologically short period of time, 66 million years ago.
https://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_extinction_event
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Asteroid Impact That Killed the Dinosaurs: New Evidence - Chicxulub Crater
A cosmic impact in what is now Chicxulub in Mexico dealt dinosaurs the final deathblow some 65 million years ago, say scientists who have fresh evidence supporting the case.
http://www.livescience.com/26933-chicxulub-cosmic-impact-dinosaurs.html
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Mass Extinction, Mass Die-Off Information, Prehistoric Facts - National Geographic
Learn about prehistoric mass extinctions and animal die-offs and get information, facts, and more about dinosaur extinctions from National Geographic.
http://science.nationalgeographic.com/science/prehistoric-world/mass-extinction
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BBC - Future - A Looming Mass Extinction Caused by Humans
Conservationists fear many animal and plant species will vanish forever thanks to our impact on the planet. The big question is what we can do to prevent it.
http://www.bbc.com/future/story/20121101-a-looming-mass-extinction
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Prehistoric Human Hunters the Cause of Giant Herbivore Extinction in Australia, Says Study
According to the results of a recently completed study published in the March 23, 2012 issue of the journal Science, human hunters were largely responsible for the extinction of Pleistocene-age Australia's giant herbivores around 40,000 years ago.
http://popular-archaeology.com/issue/march-2012/article/prehistoric-human-hunters-the-cause-of-giant-herbivore-extinction-in-australia-says-study
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Why Do Animal Species Become Extinct?
Aside from weather and habitat loss, know what other factors are involved to the extinction of animal species.
http://healthypets.mercola.com/sites/healthypets/archive/2010/04/28/why-do-animal-species-become-extinct.aspx
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Endangered Animals for Kids: How They Become Extinct
How do endangered species and animals become extinct? Hunting, pollution, loss of habitat, and introduced species all play a part.
http://www.ducksters.com/animals/how_animals_become_extinct.php
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Why Do Animals Go Extinct? - About
What are the factors that cause a plant or animal to go extinct--not only in the present day, but hundreds of millions of years ago? Here are the 10 most common causes of species extinction.
http://dinosaurs.about.com/od/dinosaurextinction/ss/The-10-Reasons-Animals-Go-Extinct.htm
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Greatest Mysteries: What Causes Mass Extinctions?
The great disappearance of life on earth continues to baffle scientists.
http://www.livescience.com/1752-greatest-mysteries-mass-extinctions.html
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Causes of Extinction of Species - The World Counts
When we talk about extinctions, we need to understand that it's not just about the disappearance of a single specie but also the effects of its disappearance to the environment that it interacts with.
http://www.theworldcounts.com/stories/Causes-of-Extinction-of-Species
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Humans Caused 322 Animal Extinctions in Past 500 Years - Discovery News
Some 322 birds, mammals and reptiles all went extinct in just the past 500 years due to people, research shows.
http://news.discovery.com/animals/endangered-species/human-caused-322-animal-extinctions-in-past-500-years-140724.htm
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Animal Extinction and Endangerment, Main Causes
Animal extinction of most recent times is mainly the result of expanding human demand for animal and other natural resources. Explore these and other causes in depth here.
http://www.tropical-rainforest-animals.com/Animal-Extinction.html
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Causes of Extinction - EOEarth
Causes of extinction have prehistorically been dominated by natural earth processes such as geological transformation of the Earth's crust.
http://www.eoearth.org/view/article/150962/
