All Stories by Allison Gasparini
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SpaceSalty water may have flowed near Mars’ equator as recently as 400,000 years ago
Crusts and cracks on Martian sand dunes are a sign salty water flowed near the equator thousands, not billions, of years ago — and may still exist.
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SpaceRocky planets might have been able to form in the early universe
The James Webb telescope spied planet-building material around young stars in a nearby galaxy whose chemical makeup matches that of the early cosmos.
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SpaceA crucial building block of life exists on the asteroid Ryugu
A sample from Ryugu collected by Japan’s Hayabusa2 spacecraft contains uracil, a component of RNA, which is found in all living cells.
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TechA trick inspired by Hansel and Gretel could help rovers explore other worlds
Taking a cue from a classic fairy tale, scientists propose a way for rovers to send back data from treacherous terrain.
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HumansA new biomaterial heals heart attack damage in animals. Humans could be next
If used right after a heart attack, this intravenously delivered biomaterial can preserve cardiac function. It could also treat traumatic brain injury.
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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.