Dr. Julian De Silva used an ancient formula of “Golden Ratio”, which, in terms of beauty, says that the face of a beautiful person should be about 1.6 times longer than it is wide. The distance between the forehead hairline and the bottom of the chin should be divisible into 3 equal parts. And, finally, the eye width should be equal to the distance between the eyes.

Plastic or polymer banknotes were first developed by the Reserve Bank of Australia in 1988. Advantages of such banknotes are quite obvious: they last significantly longer than paper notes, have lesser environmental impact, a reduced cost of production and replacement and incorporate many security features not available to paper banknotes, including the use of metameric inks. The United Kingdom, Chile, Nicaragua, Republic of Maldives and some other countries have introduced plastic banknotes into circulation too. Here are the best looking plastic banknotes out there.

Have you ever thought about what happens to all those plastic, paper or foam cups you use in different fast foods? Well, some of the restaurants like Chick-Fil-A recycle them to make beautiful benches. That's what they call a responsible recycling. Check out the process.

More fun than Mentos and coke, but definitely more dangerous!