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 ...

I’m pretty sure I’m not the only one who did this, but the first thing I did when I got my first laser pointer was go outside and point it at the moon. I’d stare and wonder if someone was up there, ...