New technology
Startup Polar Night Energy builds the world's largest sand battery
The sand battery designed by startup Polar Night Energy will be built over the next 13 months in Pornainen, Finland to meet year-round heating demand.
Polar Night
Browse ScienceInfo articles and explainers related to Polar Night.
Topic archive
Articles about Polar Night
3 published items.
Discover science
Why is there a midnight sun?
Are you a morning lover? Do you feel the daytime is not always enough for you to complete all the activities you want?
Discover science
The American city entered the 65-day period without the Sun
The city in Alaska state is going through a long dark period called