Excremental Gains

London's Science Museum is successful enough that they don't have to take shit from anybody. But they might, all the same.

The central London museum said it was considering taking the waste from its 14 toilet blocks and converting it into electricity. [...] The museum said the plan would be to siphon off waste from the toilets, store it and then either burn it as fuel in a mini-power station or turn it into electricity using a microbial fuel cell. The power produced from the excrement of 100,000 visitors could produce enough to power 500 light bulbs, while also breaking down harmful organic matter, it said.

With nearly 3 million visitors a year, that's about 15,000 lightbulbs worth of electricity. More, if they put a Burger King stand in the lobby. In light of this, the Guardian's Yee Shun Fung lists ten usages for feces, including as frisbees and for smoking cheese.