Water is one of the most well-known compounds, which is made up of two elements, Hydrogen and Oxygen, on the Earth, although ...

Most of the time, people never question the colour of water. It feels invisible in a glass, like air you can drink. Then a ...

How many of the world's lakes have blue water, as opposed to green, brown or some other color? What does a lake's color say about its health, and what causes lake color to change? Scientists know a ...