Quote

We cannot live without the earth or apart from it, and something is shrivelled in a man's heart when he turns away from it and concerns himself only with the affairs of men.
~Marjorie Kinnan Rawlings ~

 Almanac

Mercury is a metal. It has the unusual characteristic - for a metal - of being liquid at room temperature. Mercury sees many uses, from dental fillings to fungicides to various industrial processes.

Mercury in a bottle
Image via Wikimedia Commons.

Mercury is also poisonous. It is a neurotoxin and, at high enough doses, can damage the brain or even cause death.