Climate change is making lakes less blue

If global warming persists, blue lakes worldwide are at risk of turning green-brown, according to a new study which presents the first global inventory of lake color. Shifts in lake water color can indicate a loss of ecosystem ...

How songbirds' striking colors put them at risk

Bright, uniquely colored songbirds are at higher risk of extinction and more likely to be traded as pets, according to researchers reporting in Current Biology on September 15. The researchers also predict that almost 500 ...

Biomimetic dual-color domes programmable for encryption

Many organisms in nature have evolved spots with two structural colors on their bodies, like the Papilio Palinurus butterfly. The green color on its wings derives from the turquoise-yellow dual color spots.

Red giant Betelgeuse was yellow some 2,000 years ago

An interdisciplinary team centered around a Jena astrophysicist utilized observations from antiquity to prove that Betelgeuse—the bright red giant star in the upper left of the constellation Orion—was yellow-orange some ...

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