A new study found a surprising trick the body uses to control blood sugar: in low-oxygen environments, red blood cells …
Oxygen
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One of the most striking examples is an ancient relative of modern dragonflies, Meganisoptera—commonly called griffenflies. The insect, about half a meter long with a 70-centimeter wingspan, lived on our…
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Nearly three-quarters of Earth is ocean, which makes our planet look like a pale blue dot from space. But researchers in Japan published evidence that Earth’s oceans were once green…
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The Bible tells two stories of fishermen who, thanks to Jesus, hauled in enormous catches that fed their communities for weeks. These events likely took place on the Sea of…
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Was the air on Earth millions of years ago the same as it is today? Only eyewitnesses can answer that question. And believe it or not, those eyewitnesses have been…