The USA uses uranium from Russian nuclear weapons as fuel in its civilian nuclear power plants. If the weapon-grade uranium is mixed with the Norwegian element thorium, the waste becomes 95 per cent less radioactive.
In five to seven years, solar cells will have become much cheaper and only one-twentieth as thick as current solar cells. The trick is to deceive the sunlight with microbeads.
The universe abounds with dark matter. Nobody knows what it consists of. UiO physicists have now launched a very hard mathematical explanation that could solve the mystery once and for all.