Ancient poop offers unusual insight into animal behavior

Some people are annoyed when they encounter a fresh pile of dung while out on a walk in nature. Others are excited because it points to the recent visit of a particular kind of animal. But some scientists, myself included, ...

Early humans: Tooth enamel reveals life histories

If you take a magnifying glass and a flashlight and look at your teeth very carefully in the mirror, in places you can spot a pattern of fine, parallel lines running across your teeth. These correspond to the striae of Retzius ...

Stellar explosion in Earth's proximity

When the brightness of the star Betelgeuse dropped dramatically a few months ago, some observers suspected an impending supernova—a stellar explosion that could also cause damage on Earth. While Betelgeuse has returned ...

The little auks that lived in the Pacific

Findings from a 700,000-year-old fossil bone indicate that a close relative of the most abundant seabird species in the North Atlantic, the modern dovekie, or 'little auk,' used to thrive in the Pacific Ocean and Japan.

Genomics provides evidence of glacial refugia in Scandinavia

Evolutionary research on a grass-like, flowering perennial called the northern single-spike sedge has offered some of the first proof of ice-free locations, or glacial refugia, in Northern Europe during Earth's most recent ...

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