Physics
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PhysicsFlying snakes wriggle their way through the air
Flying snakes go tens of meters (yards) without wings. They do it by undulating back and forth and up and down, a new study shows.
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PhysicsScientists Say: Microgravity
Gravity is a force that brings objects together. But when those objects get far away, the force feels small. It feels like microgravity.
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BrainExplainer: How our eyes make sense of light
It takes a lot for images before the eyes to be 'seen.' It starts by special cells sensing the light, then signals relaying those data to the brain.
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PhysicsUnderstanding light and other forms of energy on the move
Radiation needn’t be scary, especially if it allows us to see our family or use our cell phones. Here’s a guide to light and other types of emitted energy.
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SpaceSpotted: Milky Way’s giant gas bubbles in visible light
The bubbles have different colors, based on how the gas inside them moves. That could give clues to how the bubbles developed.
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PhysicsShape-shifting cuts give shoes a better grip
With pop-out structures inspired by kirigami and animals, a shoe sole goes from flat to spiky to boost friction on slippery surfaces such as ice.
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PhysicsA contrast between shadows and light can now generate electricity
A new device exploits the contrast between bright spots and shade to produce a current that can power small electronics.
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SpaceOldest disk galaxy puts a new spin on galaxy growth
A spinning disk galaxy has been found in the early universe. Its existence is a surprise.
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ChemistryWorking up a sweat may one day power up a device
Tech that turns sweat into power may make for greener gadgets. A new device uses perspiration to charge a supercapacitor and run a sensor.
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ChemistryScientists Say: Polymer
Polymers can be natural or man-made, but they are all big molecules made up of smaller units linked together.
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PlantsSilk-based microneedles may help treat diseased plants
Engineers have invented silk microneedles to inject medicines into plants. One day farmers might use drones to dart their sick plants with meds from the air.