A new dinosaur extinction theory has been introduced by British researchers. A team of scientists lead by Gregory Price from Plymouth University studying fossils in Norway at the Arctic Svalbard discovered that a severe change in the Atlantic Gulf Stream during the Cretaceous Era caused sea temperatures to plummet 16 degrees fahrenheit (9 degrees Celcius). Scientist have found that a series of environmental changes beginning with a significant decrease in sea levels contributed to the extinction of dinosaurs, contrary to the long standing theory that a meteor may have caused the extinction. Price and his team concluded that the drop in temperature occurred when the Earth was in a "greenhouse" climate, very similar to the state of present atmosphere and environmental conditions,
which caused numerous species of dinosaurs to die out. High levels of carbon dioxide in the atmosphere caused polar ice to melt and global temperatures to rise, a phenomenon similar to conditions presently observed in the Earth's climate.
Price reported that "We believe dinosaurs were most likely to be cold-blooded creatures and would have needed the warmth to keep them alive...If they were unable to migrate south they could have been wiped out. Climate change is now very much on the agenda in trying to determine how the dinosaurs became extinct." Price also concluded that his team now "believe[s] that they died out gradually and it is very possible that this could have been caused by a series of climatic changes."