Energy
- Climate
The world is aiming for ‘net zero’ emissions of greenhouse gases
Nations are charting how they might ‘zero’ out their releases of climate-warming gases. Success might greatly lower the risks of climate catastrophes.
- Climate
Green energy is cheaper than fossil fuels, a new study finds
Switching over to clean, renewable power — and away from fossil fuels — could save trillions of dollars by 2050, a new study finds.
- Tech
Underwater cameras get a new power source — sound!
Needing no batteries, a new digital camera can run almost continuously to offer new, deeper insights into the ocean world.
- Physics
Scientists Say: Fission
Nuclear fission is the process of splitting atoms apart to release huge amounts of energy.
- Animals
Insect swarms might electrify the air as much as storm clouds do
Honeybees that flew over a voltage sensor sparked a new look at the effect of insects on electricity in the atmosphere.
- 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?
- Physics
Scientists Say: LED
LEDs, or light-emitting diodes, light up TV screens, traffic lights and many other devices used in daily life.
- Science & Society
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.
- Science & Society
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.
- Chemistry
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.
