Q&A: What Causes Iridescence?

The word “iridescence” comes from Iris, the Greek goddess of the rainbow. Iridescence is seen throughout nature in feathers, scales, and other objects, but how does it actually work?

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Q&A: Does the Y Chromosome Rot?

Because of its rapid loss of genes over the past 300 million years, scientists have predicted that the Y chromosome may disappear altogether. However, recent studies have shown that the decay may have reached a halt.

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A Lifetime of Learning: APS Honors Yale Psychologists

Yale Psychology Professors Allan Wagner and Susan Holen-Noeksema were given lifetime achievement awards from the APS. The former was recognized for his research on the mechanisms of associative learning, the latter for her work on mood disorders and regulation.

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