Comet million years ago an explosion suspected in North America caused ecological disaster.

World Scientific reports [tech.] News: Scientists in North America, where many found evidence that 1.29 million years ago, the atmosphere over Canada may have been a blast from the phenomenon of cosmic objects. .When the planet is at the end of the last glacial period, climate is slowly warming. .Scientists believe that the explosion led to wildfires over and over, destroying ecosystems and prehistoric North American cultures, and triggered a millennium-long cold spell. .<P> The southern port city of Acapulco in Mexico, meeting of the American Geophysical Society meeting, Arizona geophysicist Allen scientific advisory bodies of the Earth • West and his colleagues said that researchers in .26 in North America where to find the sample analysis result shows the impact of foreign objects multiple features. .Over the years, scientists have been concerned about these places at 1.3 million years ago, carbon-rich geological formation, the geological layers are usually only several millimeters thick, the following is full of mammoth bones earlier strata, while the above is not late period .fossil sediments. .</ P> <P> • Lawrence Berkeley National Laboratory scientists, research collaborators Richard • Firestone said that from the carbon-rich geological samples, the researchers received a large number of clues to prove that these geological materials .from the universe. .In addition, carbon-rich geological base for the grass-like carbon micro-block phenomenon indicates that they may be formed in the elements melt into liquid droplets. .In addition, the block also contains a micro-formed under high pressure nano-diamonds. .</ P> <P> West believes that because there is no cosmic objects found in smoke explosion left a huge hole, so that, when the explosion into the atmosphere, and most likely a comet. .The researchers said the object exploded when the universe after the heat has resulted in a huge wildfire four North American continent, while the explosion of heat and shock wave may melt glaciers covered parts of eastern Canada, resulting in a large number of freshwater into the North Atlantic, blocking the sea .water flow, resulting in regional climate warming. .Therefore, the air thick cloud of smoke and soot may be exacerbated in the northern hemisphere cooling. .</ P> </ p>.