Matter and Its Interactions
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ChemistryRewritable paper: Prints with light, not ink
Rewritable paper could save money, preserve forests and cut down on waste — and all without using any ink.
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AgricultureExplainer: What is a gene bank?
Most banks store money. But some very special ones store deposits that may prove even more valuable: tissues that could prevent the extinction of breeds and species.
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PhysicsNew particle may help probe strongest force in the universe
A newfound subatomic particle should allow scientists to better understand the strong force that holds together the nucleus of every atom.
By Andrew Grant -
AnimalsWhen life exploded
Life exploded in diversity during the Cambrian Period. Experts are exploring what could account for this sudden change 540 million years ago.
By Beth Geiger -
Health & MedicineCookie Science 2: Baking a testable hypothesis
I would like to make a gluten-free cookie that my friend can eat. But to do that, I need to come up with a hypothesis to test.
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ChemistryChemistry: Green and clean
“Green” means environmentally friendly and sustainable. Green chemistry creates products and processes that are safer and cleaner — from the start.
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PhysicsSmooshed diamonds: A window into exoplanets?
Scientists have compressed diamonds more than ever before. Their carbon may give clues to what conditions might be like deep within planets way beyond our solar system.
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Wire critter shows power of surface tension
Water striders walk on water by using surface tension. Now you can do the same with a wire critter weight-lifting contest.
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PhysicsVery-sub-zero water
Using lasers, scientists measured the temperature of water droplets that remained liquid even when super-cold.
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GeneticsOwww! The science of pain
No one likes pain, but it keeps us alive. That’s why scientists want to learn how best to coexist with this complicated and still somewhat mysterious sensation.
By Kirsten Weir -
TechDigital displays get flexible
Flexible and unbreakable digital displays could soon be for sale, thanks to a new organic transistor made from plastic.
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TechDigital lighting goes organic
An environmentally friendly lighting technology promises not only to save energy but also to transform our indoor environment.