Space
What has Perseverance found in two years on Mars?
NASA's Perseverance rover has turned up volcanic rocks, signs of flowing water and some of the materials necessary for life.
By Liz Kruesi
Chemistry
More Stories in Chemistry
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EnvironmentRecycling rare earth elements is hard. Science is trying to make it easier
As demand grows, scientists are inventing new — and greener — ways to recycle rare earth elements.
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EnvironmentRare earth elements could be pulled from coal waste
The scheme would provide valuable rare earth metals and help clean up coal mining’s dirty legacy.
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ChemistryThese chemists cracked the code to long-lasting Roman concrete
Roman concrete has stood the test of time, so scientists searched ruins to unlock the ancient recipe that could help architecture and climate change.
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ChemistryHow rare earth elements’ hidden properties make modern technology possible
Because of their unique chemistry, the rare earth elements can fine-tune light for many different purposes and generate powerful magnetic fields.
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Planetary ScienceThe last vital ingredient for life has been discovered on Enceladus
The underground ocean on Saturn’s icy moon may contain phosphorus in concentrations thousands of times greater than those found in Earth’s ocean.
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ChemistryHow to make tiny metal snowflakes
In a pool of molten gallium, researchers grew symmetrical, hexagonal zinc nanostructures that resemble natural snowflakes.
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Health & Medicine‘Forever chemicals’ may pose a bigger risk to our health than scientists thought
PFAS are linked to obesity, cancers and more. Growing evidence of the chemicals’ risks has prompted new guidance for safe drinking water and consumer testing.
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Health & MedicineLouis Pasteur’s devotion to truth transformed what we know about health and disease
Two centuries after his birth, Louis Pasteur's work on pasteurization, germ theory and vaccines is as relevant as ever.
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EarthCatastrophic solar storms may not explain shadows of radiation in trees
Tree rings record six known Miyake events — spikes in global radiation levels in the past. The sun, as long presumed, might not be the sole culprit.