Acute hasopharyngitis is more commonly known as a cold.

Quinine is an alkaloid extract of the bark of the Cinchona tree.

Iron deficiency causes the most common form of anaemia.

The most abundant metal in the Earth's crust is aluminium.

It snowed in the Sahara desert on February 18, 1979.

On average, an iceberg weighs 20 million tons. I don't know who weighed them.