Heat sensitive CO2 Mug
The colours change to reveal the world's most severe carbon footprint offenders!
The colours change to reveal the world's most severe carbon footprint offenders!
OWL, the Wireless Electricity Monitor
Tells you the amount of electricity you are using in terms of both power and cost.
Tells you the amount of electricity you are using in terms of both power and cost.
This was taken from: http://www.guardian.co.uk/environment
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