How many lightbulbs…

David MacKay, the Cambridge physics professor whose book on climate change is attracting some positive reviews, has a new video outlining his main argument: the need for rationality and simple maths in the discussion about how to reduce carbon emissions.

The second half specifically refers to the capacity for renewable energy production in the UK, but viewers in other countries might find his lightbulb-based tally of household energy use informative. View it after the jump:

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