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Well I don't know about that later the -- look at a find out there might be a little bit of stuff rumbling -- you know they believe these super volcanoes actually is what killed off the dinosaurs more than 250 million years ago by.
Spewing all this ash into the atmosphere and then blocking the sun for several years killing the plants and all the animals and of course the dinosaurs being among them.
Well the ferry has always been that these pools of lob up Philip beneath the mountain that's -- saint -- -- Philip beneath the mountains then thousands of years later they explode but now researchers.
At Vanderbilt University are looking at these crystals.
That actually form with in the molten lava.
And by figuring out how long it takes for these crystals to actually -- it gives them kind of a geological clock.
To pinpoint exactly when these volcanoes erupted over history and guess what.
Have a much shorter fuse -- we thought not thousands of years apparently just.
Hundreds of years now there's nothing brewing right now but.
The most closely watch volcano in the United States is almost right beneath us it's in the California's Sierra Nevada mountains in fact it's under my home -- Of mammoth lakes and it exploded and covered North America with -- 760000.
Years ago but it started misbehaving again Martha back in the seventies swarms of earthquakes releasing carbon dioxide killing trees.
And it's kind of -- calm down now but because of this new research the scientists are -- taking a much closer look.
At the volcanic activity up -- to see if maybe their timing is off and it's something much much bigger.
Could be coming our way it's fascinating stuff yet studies in -- -- -- New York it's way too dangerous out there Los Angeles Trace.
I now that the government here.
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