It's not easy making green. For years, scientists have fabricated small, high-quality lasers that generate red and blue light. However, the method they typically employ—injecting electric current into ...

Carolyn Trietsch recently defended her Ph.D. in entomology at Penn State. You can view her website or follow her on Twitter @carolyntrietsch. Laser pointers are perhaps the most abused visual aids in ...

Being an airline pilot is a job of tremendous pressure. It goes without saying, then, that expertise and absolute concentration are paramount. So much so, in fact, that the Federal Aviation ...

Lasers are objects that we normally see used as pointers in talks or help us play DVDs and CDs. But lasers are such a huge achievement in science and there are so many things about lasers that most ...