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PaleontologyNew fossils threaten an extinction theory
Recent discoveries of long-dead marine invertebrates call into question the occurrence of a catastrophic global extinction during the Late Devonian period, between 385 and 375 million years ago.
By Ben Harder -
AnimalsShe-male garter snakes: Some like it hot
Male garter snakes that emerge from hibernation and attract a mob of deluded male suitors may just be looking for safety in numbers and body heat.
By Susan Milius -
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I think this article ignored the major reason that large particles rise to the surface. The laws of inertia and momentum indicate that larger particles don’t react as quickly as smaller particles do at the end of each back-and-forth shake of the container.