A faint yet visible Martian aurora is the first instance of the phenomenon spotted from another planet's surface.

Placebo testing has been part of the process since the 1940s. It’s unclear what additional measures would achieve — but it may slow development.

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A study in Uganda shows how often chimps use medicinal plants and other forms of health care — and what that says about the roots of human medicine.

It's not quite as bad as The Last of Us. But progress has been achingly slow in developing new antifungal vaccines and drugs.

Shape and symmetry help determine where a leaf lands — and if the tree it came from can recoup the leaf’s carbon as it decomposes.

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This assassin bug's ability to use a tool — bees’ resin — could shed light on how the ability evolved in other animals.

In 2018, over 350,000 excess heart disease deaths were linked to phthalates. More research is needed to fully understand the chemicals' effects.

Rosettes made by scraping Tête de Moine, or “monk’s head,” cheese result from variations in the friction between the blade and the cheese.

A study of weather on a mountain in Greece reveal that bioparticles in the sky may drive fluctuations in rainfall patterns more broadly.

A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.