In a remarkable feat, scientists at Empa, the Swiss Federal Laboratories for Materials Science and Technology, have developed thin film solar cells on flexible polymer foils with a new record efficiency of 20.4% for converting sunlight into electricity.
New research from a global group of scientists and engineers, including from the University of Southampton, supports the use of tidal power, which has the potential to provide more than 20 per cent of the UK's electricity demand.
NASA scientists say 2012 was the ninth warmest of any year since 1880, continuing a long-term trend of rising global temperatures. With the exception of 1998, the nine warmest years in the 132-year record all have occurred since 2000, with 2010 and 2005 ranking as the hottest years on record.
The 12.0% record cell on a standard size of 1.1 square cm combines two patented absorber materials, which convert light of different wavelengths. Using two different absorber materials creates a stronger absorption of photons and improves energetic utilization through a higher photovoltage.
A leading coastal scientist has warned that some of the world's best known beach resorts may not survive projected sea level rises and that problems caused by changing sea levels are compounded by a lack of political will and short-term coastal management initiatives.
A validated multi-physics numerical model that accounts for charge and species conservation, fluid flow, and electrochemical processes has been used to analyze the performance of solar-driven photoelectrochemical water-splitting systems. The modeling has provided an in-depth analysis of conceptual designs, proof-of-concepts, feasibility investigations, and quantification of performance.
To meet 21st-century food, water and energy challenges, the world needs more women and men with interdisciplinary training and access to world problems on the ground. As a result, Cornell and five other universities have partnered with The Nature Conservancy to establish the NatureNet Science Fellows Program, which is intended to help develop a new breed of interdisciplinary scientists with academic savvy, and skills and opportunity to solve real-world problems.
Black carbon is the second largest man-made contributor to global warming and its influence on climate has been greatly underestimated, according to the first quantitative and comprehensive analysis of this pollutant's climate impact..