All Stories by Allison Gasparini
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Health & MedicineHow much water should you drink a day? It depends on several factors.
A study of more than 5,000 people in 23 countries finds that individual water need varies widely depending on physical and environmental factors.
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HumansThe world population has now reached 8 billion
In a first, the global population surpassed this milestone on November 15, according to a projection from the United Nations.
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AnimalsA clam presumed extinct for 40,000 years has been found alive
The reappearance of living Cymatioa cooki clams places it among a group of back-from-the-dead creatures dubbed the Lazarus taxa.
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LifeThis ancient worm might be an important evolutionary missing link
A roughly 520-million-year-old fossil may be the common ancestor of a diverse collection of marine invertebrates.
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HumansPrehistoric people may have used light from fires to create dynamic art
When brought near flickering flames, prehistoric stone engravings of animals seem to move, experiments with replicas and virtual reality show.
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AstronomyA newly discovered planet renews debate about how some giant worlds form
An implosion of gas may have given birth to this young exoplanet, which orbits too far from its star to have been built up bit by bit, researchers say.
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AstronomySome of the sun’s iconic coronal loops may be illusions
Folds in the plasma that streams from the sun might trick the eye into seeing the well-defined arches, computer simulations of the solar atmosphere show.