"Heiligenshein," German for halo, is a glowing light around the head and shoulders of your shadow. Learn about this odd phenomenon on this Moment of Science.
Learn about the importance and effects of eye contact on this Moment of Science.
Lack of pigment also makes eyes extremely sensitive to bright light. The pigment that determines whether your eyes are blue, brown, green, or gray normally helps to filter out stray light.
To be able to withstand a bomb blast, a luggage container must be made of pretty strong stuff. The magic ingredient in the best-known bombproof container is called Glare, which is short for “reinforced glass.”