Add a hot drink to find out who are the biggest offenders of CO2 emissions.
The Global Warming Mug comes printed with a map of the world. When you add hot water, watch and see the the countries change colour according to how much CO2 they produce.
When the hot drink is gone and the mug cools down, all the countries turn green again. If only it was that simple in real life!
The CO2 Mug is not suitable for washing in a dishwasher or heating in the microware.