The Human Genome Project didn’t just map our DNA—it challenged one of medicine’s deepest myths and showed that racial groupings have no biological basis. But the shadow of old assumptions still influences modern medicine. | NOVA l PBS

Ancient Earth may have had red oceans. Here's why: | NOVA l PBS

Did your memories ever really happen? Turns out, the very act of recalling a memory makes it vulnerable to change. | NOVA l PBS

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NOVA scienceNOW:Pandemic Flu