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 ...

Everybody knows not to shine laser pointers in your eye. They could damage your vision! (Emphasis on could, since your eye’s blink reflex would probably protect your retina.) But what if you were an ...

I’m sure all of you reading this have seen or used a laser pointer at some point in your life, or maybe you’ve even bought one online. But have you ever paid attention to the warning signs on your ...

Laser pointers may jazz up your PowerPoint presentation, but they can pose serious hazards to your eyes if you use them the wrong way. Case in point: A boy in Greece burned a hole in his retina after ...

Use PowerPoint’s laser pointer to catch attention and add excitement Your email has been sent Use PowerPoint's cool laser pointer feature to simulate a laser pointer during a PowerPoint presentation.

In the last 20 years, green lasers have shrunk from table-size lab equipment to pocket-portable presentation tools (not to mention cat toys). But making laser pointers a household item may have come ...