Dinosaurs Died From Sudden Temperature Drop "Not Comet Strike", Scientists Claim
Dinosaurs were wiped out by sudden drop in temperatures, not by comet striking the planet, scientists claimed.
British researchers claim that a sudden plummeting in the sea temperature of 16F (9C) more than 137 million years ago was the first step towards their eventual road to extinction.
While studying fossils and minerals from the Arctic Svalbard, Norway, they concluded the sudden change in the Atlantic Gulf Stream during the Cretaceous period would almost certainly have wiped out the "abundance" of the world´s dinosaurs.
One of the fossils discovered in the Svalbard by scientists
Some experts believe the creatures were wiped out by one cataclysmic event 65 million years ago – such as a meteor hitting the planet.
But the new research suggests they were wiped out by a series of environmental changes, starting with a drop in sea temperatures.
Gregory Price, from Plymouth University, who led the study, said his team´s research showed the drop in temperature happened when the Earth was in a "greenhouse" climate, which was very similar to now.
He found the drop in temperatures was so severe that numerous species of dinosaur previously living in warm, shallow seas, land and swamps would have died out.
"We believe dinosaurs were most likely to be cold-blooded creatures and would have needed the warmth to keep them alive," he said.
"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."
"We now believe that they died out gradually and it is very possible that this could have been caused by a series of climatic changes."
The drop in temperature is thought to have occurred because high levels of CO2 were in the atmosphere which caused global temperatures to rise and polar ice to melt – a phenomenon currently predicted for Earth.
Ancient Plant Remains Discovered Two Miles Below Greenland Ice Sheet: Evidence Questions Current Ice Age Theories
Volcanic eruptions, ancient global warming linked
North Pole "was once subtropical"
Mammoths and Other Great Beasts Peppered with Material from Space
Fossil DNA Proves Greenland Once Had Lush Forests: Ice Sheet Is Surprisingly Stable
Latest News from our Front Page
The Unsafe Child: Less Outdoor Play is Causing More Harm than Good
The third grade classroom that was visiting our nature center for the day consisted of mostly boys–rowdy, loud and rambunctious boys. As we started out into the woods, the children spoke loudly to each other in anticipation of what was to come. After playing a quick game and explaining the ground rules, it was time for free play. As soon ...
Rights group demand police need warrant to access data
American citizens should be able to rest safe in the knowledge that no one has the right to pry into their digital records, where they have been and how long they stayed there.
The Supreme Court has just received a brief from the Electronic Frontier Federation (EFF) stating that this should certainly be the case. However, in the case of Davis v. ...
Murder Rates Rising Sharply in Many U.S. Cities
Cities across the nation are seeing a startling rise in murders after years of declines, and few places have witnessed a shift as precipitous as this city [Milwaukee]. With the summer not yet over, 104 people have been killed this yearâ€“after 86 homicides in all of 2014.
More than 30 other cities have also reported increases in violence from a year ...
Bulgaria - Islamic State Terrorists Caught Crossing Into Europe Posing As Refugees
Bulgarian authorities near the Gyueshevo border checkpoint detained the five men, aged between 20 and 24, late on Wednesday, Bulgarian broadcaster NOVA TV reported.
The men were stopped by a border guard, who they attempted to bribe with a “wad of dollars.” However, they were searched and Islamic State propaganda, specific Jihadists prayers and decapitation videos were found on their phones.
How This NY Mom Made the Case for Her Sonâ€™s Religious Vaccine Exemption
An unidentified, Russian immigrant mother who practices the Russian Orthodox faith, has secured a religious vaccine exemption for her autistic son. New York has a bill on the table to eliminate religious exemption and to root out those who weren’t refusing vaccines on strictly devout, religious grounds. Yet, this woman’s plight goes back before talk of eliminating the exemption – two ...
|More News » |