Environment
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Climate
For greener toilets and air conditioning, consider saltwater
Using saltwater would allow coastal cities to save their freshwater for drinking and to reduce their carbon footprints. Some could save money, too.
By Laura Allen -
Environment
Fungi help rescue crops being harmed by microplastics
Microplastics in the soil hinder plant growth. But two finalists at Regeneron ISEF found that fungi and farm waste can reduce the harm.
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Tech
Nanocrystal ‘painted’ films may someday help relieve summer heat
The rainbow palette and cooling powers of new plant-based films comes from their microscopic surface patterns of tiny crystals.
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Environment
Older diesel school buses linked to more student absences
Schools that replaced or upgraded old diesel school buses increased student attendance rates, new research shows.
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Environment
Making yards more diverse can reap big environmental benefits
Replacing grass with native plants uses less water and fewer chemicals while providing additional benefits to people and wildlife.
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Earth
A natural ‘cathedral’ lurks deep under Antarctic ice
By drilling into this cavern, scientists have opened a window into the mysterious world of hidden lakes, their occupants — and rivers that run uphill.
By Douglas Fox -
Earth
Under the ice, a hidden lake hints at its origin — and coming end
Lake Mercer may serve as a model for better understanding the birth and life of Antarctica’s hundreds of subglacial lakes.
By Douglas Fox -
Chemistry
Scientists Say: PFAS
Non-stick coatings, stain-resistant cloth and other common materials leach long-lived PFAS into soil and water.
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Tech
Recycling rare-earth elements is hard — but worth it
As demand for these valuable metals has been skyrocketing, scientists have begun inventing new — and greener — ways to reuse what they have in hand.
By Erin Wayman -
Environment
Rare-earth mining is dirty but key to a climate-friendlier future
That’s spurring new research to find a steady but safer supply of these precious metals, including in the United States.
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Environment
Sea life may suffer as plastic bits alter metals in water
This interplay between plastics and metals could affect how each affects the environment — and suggests opportunities for controlling their risks.
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Climate
Creating less new stuff could greatly help Earth’s climate
Instead of throwing unneeded things away, scientists recommend moving to a cycle of reducing, reusing, repairing and remaking old things into new ones.