Ancient Beasts Raise Questions About Climate Change
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ROCKTAIL BAY, South Africa  - The signs of the  scuffle were fresh but it is a struggle that has gone on for  tens of millions of years.
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An international research team claims that it was major climate change, not hunting that led to major bison extinction. Moving in huge herds, more than 20 million bison roamed the American West before white men arrived.
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Climate change could have been the killer blow that finished off the Neanderthals, according to a study.
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WASHINGTON - Hunters may not be to blame for the decline in bison populations, according to a new study that points the finger at climate change.
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Scientists try to figure out how far off the next ice age is.
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The ancient family tree where all the world&#39;s birds perch is getting bigger, odder and older, scientists announced Wednesday. In a report in Thursday&#39;s issue of the journal Nature, paleontologists
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Earth sits between two worlds that have been devastated by climate catastrophes.
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A rise in the temperature of the world's oceans is often accompanied by mass extinctions, according to a new statistical study of fossil records.
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BERLIN, May 21 (IPS) - New scientific evidence confirms that human action,  such as carbon emissions causing global  warming, and  industrial-scale search for food, is decimating biodiversity -  and, in some  cases, is driving threatened species to evolve and  adapt at unexpected speed to new living  conditions.
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Small deer-like animal that waded in lagoons 10 million years ago may have evolved into whale
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Using computer programs,scientists have suceeded in reconstructing the DNA of a creature that lived at the time of the dinosaurs more than 75 million years ago, a small, furry nocturnal animal that was the common ancestor of all placental mammals
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A new study of the skeleton of a one-meter-high race of âhobbitsâ that lived 12,000 years ago in Indonesia shows that they were a species of humanâand that the evolutionary path to Homo sapiens has been torturous indeed.
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Prehistoric hunters may be off the hook in the latest twist of a prehistoric whodunit that tries to explain why bison populations sharply crashed thousands of years ago.
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A fabled fossil goes on view for the first time in decades  -  and ignites a controversy
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Palm trees in Canada? No ice anywhere? The future could look like Earth's hottest ancient epoch, says a new study of carbon dioxide levels.
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While nosing around the Quaternary mammal collection at the Provincial Museum of Alberta two years ago, Paul Matheus, a paleontologist with the Alaska Quaternary Center, came across a brown bear fossil that seemed out of place.
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Berkeley - A University of California, Berkeley, paleobiologist and his colleagues warn that the future of the Earth&#39;s mammals could be as dire as it was between 50,000 and 10,000 years ago, when a combination of climate change and human pressure resulted