Plants
Physics explains how rose petals get their iconic shape
Scientists thought they knew what was behind rose petals’ geometry. They were wrong.
By Sarah Wells
HS-PS2-5
Plan and conduct an investigation to provide evidence that an electric current can produce a magnetic field and that a changing magnetic field can produce an electric current.
More Stories in HS-PS2-5
- Tech
Magnetic fields melt and re-form new shape-shifting devices
Miniature machines made of gallium and magnetic particles can switch from solid to liquid and back.
- Physics
Scientists Say: Magnetism
Magnetism is an aspect of one of the four fundamental forces of nature: electromagnetism.
- Agriculture
Native Amazonians make rich soils — and ancient people may have too
Modern Amazonians make nutrient-rich soil from ash, food scraps and burns. The soil strongly resembles ancient “dark earth” found in the region.
- Earth
Scientists Say: Pole
A pole is either of two opposite ends of a molecule, magnet, battery, planet or other object.
- Physics
Scientists Say: Force
When an object experiences a force, its change in motion — or acceleration — depends on its mass.
- Physics
Staying grounded in space requires artificial gravity
On TV, people in space walk around like they’re on Earth. How can science give real astronauts artificial gravity? Spin right round, baby.
- Environment
Batteries not included: This Game Boy look-alike doesn’t need them
Game Boy revolutionized the gaming industry. A newer version could help slow the rate of climate change.
- Chemistry
Batteries should not burst into flames
Because lithium-ion batteries power modern life, they need to store a lot of energy. Now scientists are focusing on making them safer.
- Climate
Hotspots found for lightning’s superbolts
A nine-year survey reveals where and when the most energetic lightning strikes — and it’s not what scientists expected.
