Gift idea: Global warming mug

Here's a great twist on those mugs that change colour when you put a hot drink in them: the Global Warming Mug. These topical mugs will really stir up the debate on global warming.

As you add a hot drink to the mug you'll see the picture alter, simply and effectively illustrating which areas of the globe produce the highest amounts of CO2.

These mugs are a great weapon any eco warrior should have at their disposal, and of course the mugs will also hold a wonderful warm beverage for you!