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Math Quiz

Are you ready to have your math skills put through their paces? This entertaining and completely free quiz will put your arithmetic prowess to the test! The questions start off easy but get increasingly more challenging toward the end. Curious to see how well you score? Let's find out.

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Fact Lab

Some of the many inventions credited to Leonardo da Vinci are the first versions of the contact lens. The prototypes involved submerging one's head in a bowl of water. This addressed the refractive power of the cornea by neutralizing it, though da Vinci never intended the invention for vision correction, but rather for accommodation.

The Golden Gate Bridge was originally meant to be painted in blue and yellow stripes to increase its visibility. The iconic red color was only the primer. However, after seeing the bridge painted in this red color, a color that has since been officially called international orange, the consulting architect decided that it was more pleasing to the eye and left it as it was.

The famous black sunglasses in the Matrix were custom-made for the cast. The trendy specks are responsible for creating that sleek and chic look of the movie that became iconic of the sci-fi movie.

Fact Lab

The famous black sunglasses in the Matrix were custom-made for the cast. The trendy specks are responsible for creating that sleek and chic look of the movie that became iconic of the sci-fi movie.