News: Energy and Environment

In a paper published June 30 in Nature Energy, Yueh-Lin (Lynn) Loo and her co-workers describe how they used organic semiconductors for constructing solar cells that are transparent but can be tinted to block 80% of the light under their own power.
Princeton University is part of a partnership of eight universities that has received a six-year, $20 million federal grant to pursue broad approaches to improving the efficiency of production and use of fossil fuels, while minimizing greenhouse gas emissions and harm to the environment.
In the future, cars could run on fuel that started as a tree branch — part of a virtuous cycle that begins in the woods and ends with cleaner air and decreasing levels of greenhouse gases in the atmosphere.