How many light bulbs?

This video is the personal analysis of the energy crisis in the UK by Cambridge University physicist, David Mackay.

He discredits some methods of energy saving like unplugging phone chargers, doesn't make any considerable difference. The point is that individual efforts are not enough, and people can't easily reject what they are familiar to use with right now.

He said that to follow advices from climate scientist, and to withdraw from consuming fossil fuels by 2050 which is currently main and 90% of Britain's power supply, and the plan should get started now.

source & reference : CambridgeUniversity's Youtube Channel

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