Energy
- Physics
Explainer: What are the different states of matter?
Most people know solids, liquids and gases — but what about the four other states of matter?
- Tech
Scientists Say: LED
LEDs, or light-emitting diodes, light up TV screens, traffic lights and many other devices used in daily life.
- Tech
Teens’ new tech would send alerts to reduce preventable deaths
A trio of teen innovations created devices that can speed up the response time to pool accidents, overheating in cars and combat-related injuries.
- Animals
Orb-weaving spiders use their webs like external eardrums
Scientists discover that orb-weaving spiders listen with their legs, detecting sound vibrations that travel through their silken webs.
- Chemistry
Cellulose may keep ice cream from turning gritty in your freezer
Adding nanocrystals extracted from wood avoids the growth of ice crystals, keeping your treat smooth and creamy.
- Tech
This sun-powered system delivers energy as it pulls water from the air
The device not only produces electricity but also harvests water for drinking or crops. It could be especially useful in remote and dry parts of the world.
- Materials Science
New cloth cools you when you’re hot, warms you when you’re cold
Scientists 3-D printed the new fabric, which has even more tricks up its sleeve — such as conducting electricity and resisting radio waves.
- Tech
Robots made of cells blur the line between creature and machine
Scientists are using living cells and tissue as building blocks to make robots. These new machines challenge ideas about robots and life itself.
- Physics
Explainer: How do mass and weight differ?
Learn why these terms aren’t the same and which to use where. And should you report your results in kilograms? Pounds? If in doubt, try using newtons.
- Environment
Clothes dryers may be a major source of airborne microplastics
Scientists thought washing machines were a leading contributor of microplastics. Now it appears dryers may be an even bigger problem.
- Physics
Scientists Say: Voltage
Voltage is a measure of how much electricity is available to power devices.
- Physics
Explainer: Understanding electricity
Here’s what allows you to plug in and power up the devices in your life.
