Excitons, encountered in technologies like solar cells and TVs, are quasiparticles formed by an electron and a positively charged "hole," moving together in a semiconductor. Created when an electron ...

Cyanobacteria began contributing oxygen to Earth's mostly noxious atmosphere more than 2 billion years ago. The photosystem ...

Through Creekside Soils, the city of Hutchinson offers more than 4,000 homes weekly curbside pickup of food and yard trimming recycling. But there are a few problems. The source-separated organic ...