Physics
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MathBeyond crystal balls: How to make good forecasts
Science shows mounds of data and some math are key to predicting future events.
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TechNew ‘ionic wind’ can dry foods while preserving nutrients
Researchers have come up with a way to increase the energy efficiency of a drying technique, possibly making it ready for prime time.
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ChemistryExtreme pressure? Diamonds can take it
Diamond retains its structure even at extreme pressures, which could reveal how carbon behaves in the cores of some exoplanets.
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EarthExplainer: What are aerosols?
We may not see them, but tiny particles and droplets cloud the air, affecting its properties. Some may be pollutants, others all-natural products.
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Materials ScienceSuper-absorbent swab could curb errors in COVID-19 testing
A new super-absorbent swab could cut down on false negatives from COVID-19 testing. And that could help slow spread of the disease.
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PhysicsScientists Say: Piezoelectric
Piezoelectric materials produce an electric voltage when they are bent or squished. This can let us harvest electricity from movement.
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PhysicsPhysicists have clocked the shortest time span ever
The experiment revealed how long it takes light to cross a hydrogen molecule: just a couple hundred zeptoseconds.
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PhysicsWhat did you say? Fabric masks can really muffle voices
Some types of face masks muffle speech more than others — something that teachers should take into account.
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AgricultureDew collector brings water to thirsty plants
This invention grabs water from the air at night. All it needs is the sun’s warmth the next day to release that moisture to growing plants.
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PhysicsLet’s learn about gravity
Gravity is an attraction between objects with mass. The more massive the object, the more gravity it’s got.
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TechBye-bye batteries? Power a phone with fabric or a beacon with sound
New piezoelectric systems produce electricity in unusual ways, such as when a certain nylon bends or underwater ceramics vibrate.
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ChemistryA soil-based ‘concrete’ could make buildings green, even on Mars
A new soil-based material offers an alternative to concrete for 3-D printing environmentally friendly buildings.