News
- Astronomy
Sundancing
Astronomers have solved the mystery of why supergranules—enormous cells of turbulent, charged gas on the sun's surface—appear to move across the sun faster than the sun rotates.
- Physics
Clocking gravity
The first attempt to measure the speed of gravity finds it roughly equal to that of light, as expected, though not everyone agrees that the method used can actually measure gravity's speed.
- Earth
Contraceptive ring could pose risks after its disposal
Discarded vaginal contraceptive rings could interfere with fishes' reproduction by releasing estrogen into streams.
- Earth
Snow alga may be sizable carbon sink
A common microorganism that adds a reddish tinge to some patches of snow may be a significant consumer of planet-warming carbon dioxide.
