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Your blood is also red because of a mixture of iron and oxygen in a molecule called hemoglobin. So in a way, the ancient ...

Mars isn't a bright, fire-engine red, but the iron oxide in its rocks makes it appear redder than other planets, especially ...

Imaging the object in the optical cavity improves the upconversion yield by several orders of magnitude because light oscillates in the cavity for several round trips until its intensity is high ...

Expected air moisture is missing over drier areas worldwide, possibly because climate models undervalue the effects of plants and other life. This finding could be a fingerprint of human-caused ...