The ability to store electricity using hydrogen could make wind and solar power a secure energy source, freeing Europe from its dependency on imported fossil fuels, according to Bert De Colvenaer, executive director of the Fuel Cells and Hydrogen Joint Undertaking, a public-private partnership.
The Nordic Orion became the first cargo ship to take the treacherous Northwest Passage from the Pacific Ocean to Europe last year, and now its Danish operators are planning more trips across the Arctic as the sea ice melts.
Researchers are working on ways to place radioactive waste some four to eight hundred metres underground and seal it off with specialised plugs. If they succeed, the first permanent disposal sites could be operating in Europe by 2025.
Winners from Germany and Canada take home top prizes.
New observations may provide alternative explanations for dark energy.
We need to double-check the evidence on dark energy, as it may not exist at all, says Prof. Subir Sarkar.