Motion and Stability: Forces and Interactions
- Tech
Trees power this alarm system for remote forest fires
Wind moving through tree branches is all the energy needed to power devices that can detect a remote fire before it rages into an uncontrolled inferno.
- Tech
This high-tech sweeper is designed for super-clingy moon dust
An electron beam is the newest tool being developed to remove sticky and damaging lunar dust from surfaces.
- Environment
Washing your jeans too much might pose risks to the environment
Jeans shed thousands of denim fibers in every wash. Those fibers, and the chemicals used to treat them, now are showing up in even the Arctic Ocean.
- Humans
Changing climates can take cooling tips from warm regions
When summer heat waves hit northern cities, people might look to keep cool using tropical building strategies — and forgotten architectural wisdom.
- Physics
How physics lets a toy boat float upside down
Buoyancy’s upward force keeps objects afloat even in unusual conditions.
- Chemistry
How to recycle ‘nonrecyclable’ plastics
A new process can convert some nonrecyclable plastics into a type that now can be reused. That could greatly cut down on wastes sent to landfills.
- Chemistry
New solution for carbon dioxide: Turn it into ‘green’ fuel
Chemists have created a new way to convert carbon dioxide into ethanol. It might one day help remove excess CO2 — a greenhouse gas — from the air.
- Materials Science
Will bacterial ‘wires’ one day power your phone?
An accidental discovery helps scientists generate electricity out of thin —but humid — air with bacteria-made protein nanowires.
- Tech
Let’s learn about space robots
Space robots can take pictures of other planets, analyze samples of their surface and even peer into their interiors.
- Physics
Flying 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.
- Physics
Shape-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.
- Physics
A 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.
