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The evidence pointing toward a major cometary impact that heralded the closure of the last ice age 13,000 years ago is steadily growing, with a new study from the University of Kansas offering more data that supports what is known as the Younger Dryas impact hypothesis.

"The hypothesis is that a large comet fragmented and the chunks impacted the Earth, causing this disaster," explains University of Kansas Emeritus Professor of Physics & Astronomy Adrian Melott. "A number of different chemical signatures–carbon dioxide, nitrate, ammonia and others–all seem to indicate that an astonishing 10 percent of the Earth’s land surface, or about 10 million square kilometers [3,9 million square miles], was consumed by fires."
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Some of the flame retardants added to carpets, furniture upholstery, plastics, crib mattresses, car and airline seats and other products to suppress the visible flames in fires are actually increasing the danger of invisible toxic gases that are the main of death in fires. Almost 10,000 deaths from fires occur in industrialized countries worldwide each year, including about 3,500 in the US. Contrary to popular belief, inhalation of toxic gases released by burning materials–not burns–causes the most deaths and most of the serious injuries.
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This season’s massive Arizona fires have destroyed dozens of structures and burned nearly three-quarters of a million acres. But they’ve also done something else: They also are contributing to global warming by upsetting the carbon balance while they are burning and for years to come. Trees breathe in carbon dioxide, but how long they hold onto it affects the amount of greenhouse gases in the atmosphere. Ecologist Mike Stoddard says, "These large fires are devastating our forests. We’re concerned that (trees are) not regenerating after these wildfire events."
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