True or False?

Sunglasses should be certain to block all harmful aspects of UV light — meaning they need to have a UV-400 blocker. Sunglasses are also worn for cosmetic purposes, like mirrored glasses sometimes are. However, the reflective coating of these fashion statements also provides additional protection for skiers, snowboarders, and the like.

For approximately 200 years, microscope technology remained relatively unchanged. In the 1850s, however, Carl Zeiss, a German engineer, developed improvements for the device! Joseph Jackson Lister also helped eliminate the unequal bending of light hitting the microscope lens, leading to further improvements!

If you speak and understand Chinese, you use both sides of your brain. English speakers only use the left side of their brains! The most spoken language in the world is Mandarin Chinese, with over 13% of the world's population speaking it!