What can radiometric dating reveal points 1

Theories that a comet struck Earth at the end of the Ice Age 12,800 years ago (artist's illustration shown) may be wrong, according to a new study.

The researchers say evidence for dating at 29 impact sites across North America suggesting a comet sparked a brief period of cooling after the Ice Age is flawed Scientists agree that the brief episode at the end of the Ice Age - officially known as the Younger Dryas after a flower that flourished at that time - sparked widespread cooling of the Earth 12,800 years ago and that this cool period lasted for 1,000 years.

In short, this is a documentary film that promotes ID (Intelligent Design).But theories about the cause of this abrupt climate change are numerous including the cosmic-impact theory based on sites in places like Quebec The Younger Dryas Impact Hypothesis rests heavily on the claim that there is a Younger Dryas boundary layer at 29 sites in the Americas and elsewhere that contains deposits of supposed extraterrestrial origin that date to a 300-year span centered on 12,800 years ago.The deposits include magnetic grains with iridium, magnetic microspherules (microscopic spherical particles), charcoal, soot, carbon spherules (small spheres), glass-like carbon containing nanodiamonds and fullerenes (molecules made entirely of carbon) with extraterrestrial helium, all said to result from a comet or other cosmic event hitting the Earth.I think it is good to see their reasoning wrapped up in a slick propaganda video.is a documentary created to engage our scientific community in order to encourage forward thinking.

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