The largest sand battery in the world - where it was built and why.

In Finland, the largest sand battery in the world has already started operating, which will help reduce carbon emissions from the local heating network. This facility, which will change the lives of local residents, was built by Polar Night. A sand battery is a reservoir filled with crushed talc that can store energy and release it when needed.Chinese scientists have managed to accelerate laser communication to a record speed of 1 Gbit/s, which is five times faster than Starlink. A difference between sea and river pearls has also been announced.