Scientists use a ghost laser beam to spot tiny flaws while keeping a free-electron laser stable for hours. For decades, ...

Abstract: Light amplification by stimulated emission of radiation (laser) sources has many advantages for use in high-data-rate optical wireless communications (OWCs). In particular, the low-cost and ...

These 50 unique and easy crafts for teens and tweens will keep your kids busy – they can make these genius ideas for fun or ...

Last year, Gen Z rose up in protest around the world. What have you seen, recently and in history, that helps you believe young people can make positive change? By Katherine Schulten Teens, choose a ...