Under the sea ice during the Arctic’s pitch-black polar night, cells power photosynthesis on the lowest light levels ever observed in nature.

The United States has been at the epicenter of the planet’s most unusually cold conditions early in 2025. The polar vortex is ...

A polar vortex is a stream of cold air that normally ... back-up batteries for your cell phones." The National Weather Service has advised the public to check the forecast for their area on ...

A series of blasts of polar vortex air from the north will bring ... and our vehicles for warmth in case of an emergency. For cell phones, you can keep the device near your body to keep it above ...

The air moves towards the equatorial low-pressure zone, and warms up when it meets the land or ocean. At around 60° this warmed air rises. This is another thermally direct cell.

This movement is known as the Hadley cell. The Ferrel cell is found between the Hadley and Polar cells and lies between 60º north and 30º north. This is where the UK lays. The Polar cell is much ...