Engineering Design
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Health & MedicineWhat is the role of in-person classes in COVID-19’s spread?
New data haven’t shown that schools pose a big coronavirus risk to kids and their families, despite fears that they might.
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ClimateWarming cities may see more rain — and frequent flooding
Scientists are seeking to understand why and how to mop up excess precipitation.
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ClimateStores and malls buy into ponds and rain gardens for flood control
An extra bonus: These rainy-day ponds clean up that dirty water running off parking lots.
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ChemistryNew glue offers to turn any small walking robot into Spider-Man
To climb walls, robot feet need to alternately stick and let go. A novel adhesive can do that. Its stickiness is controlled by electric fields.
By Shi En Kim -
ChemistryLots of makeup may contain potentially harmful ‘forever chemicals’
Hints of PFAS compounds have turned up in about half of tested makeup products. Waterproof mascaras and lipsticks were very likely to contain them.
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ArchaeologyHow torchlight, lamps and fire illuminated Stone Age cave art
Experiments with stone lamps and torches are helping scientists see 12,500-year-old cave art with fresh eyes.
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AnimalsUncovering secrets of the glasswing butterfly’s see-through wings
The tricks of its transparency include sparse, spindly scales and a waxy coated membrane.
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Climate‘Zombie’ wildfires can reemerge after wintering underground
Climate change may make these not-quite-dead blazes more common. Scientists are learning to predict where a zombie might emerge.
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PhysicsNuclear clocks are nearly here
More precise clocks could improve technologies such as GPS and help scientists test major ideas in science.
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BrainFather-son bond inspires sweets that model the shapes of molecules
These bite-sized gummy candies could spark interest in the world of chemistry, especially among students who can’t see.
By Carmen Drahl -
Health & MedicineWill we all need COVID-19 booster shots?
Experts say not yet, but booster vaccines may be coming as new SARS-CoV-2 virus variants keep emerging.
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ChemistrySleep-friendlier lighting is on the way
Chemists have created a new glowing material for LEDs. It should lessen how much near-bedtime lighting impairs your ability to nod off.
By Manasee Wagh