What is Dark Energy?
Dark Energy is causing our universe to expand but we still don’t know why - It will stretch the cosmos so much that one day no one will see stars
Greece and Bulgaria provide energy security, PM Mitsotakis says in meeting with Bulgarian President (video)
"Greek companies will be able to store natural gas in northwestern Bulgaria and Bulgarian companies will be able to use Revythoussa," said the prime minister
Abandoned mines can store enough electricity to power the planet, scientists claim
The scientists estimate that using gravity battery technology within mines has an estimated storage potential of roughly the equivalent of global daily electricity consumption
