A special form of man-made crystals known collectively as perovskites have stunned scientists with their capacity to convert sunlight into electricity, and further development could reduce the cost of renewable energy.
Using a protein taken from nature, scientists have made artificial leaves that can harvest energy faster than natural ones, and the ultra-lightweight material opens up the possibility of wearable technology and paint-on solar cells.
Nuclear fusion could become the main source of energy in the second half of this century, and Europe is well-positioned to lead the way as long as it manages its resources correctly, according to the people overseeing the research.
Precisely designed nanostructures can catch light and help improve the efficiency of solar cells by up to 70 %, according to Professor Albert Polman, the 2012 joint recipient of the prestigious ENI Renewable Energy Prize and joint winner of the 2014 Julius Springer Prize for Applied Physics.
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.