Now thats a strange liquid

The three most common states of matter are solid, liquid and gas. Related to this is that these properties of a chemical substance usually exist such that its melting point is below its boiling point. Take water for example. It melts at 0°C and boils at 100°C. Ok, a fairly normal chemical.
These guys("Law-breaking liquid defies the rules") have just found a mixture of chemicals that starts of as a liquid but as you heat it to between 40-70°C it solidifies, then re-liquifies as you cool it down again.

This would be like taking a cup of water and heating it in the oven and taking out a cup of ice!.
Quite amazing really.