IN 2007, fresh off an election victory in both chambers of Congress, the Democratic party set out to fulfil its campaign promise to make the US more sustainable - starting with the building they had just gained control of.
With their "Green the Capitol" initiative, the Democrats planned to make the building a model of sustainability and an example to us all. They replaced light bulbs and bathroom fixtures, but perhaps most significantly, they took the step of greening the congressional cafeteria. Cost was no object. Good thing, too.
The problem, as they saw it, was an excessive reliance on environmentally wasteful styrofoam containers and plastic utensils. And so they issued a decree: from now on, the cafeteria would use biodegradable containers and utensils.
They claimed science was on their side: the utensils could be composted, and would thus be better for the environment. The result was a miracle of sustainability, at least according to internal reports, which claimed to have kept 650 tonnes of waste out of landfill between 2007 and 2010.
The only problem was that the "green" replacements were worse for the environment. The spoons melted in soup, so people had to use more than one to get through lunch. The knives could barely cut butter without breaking. And instead of composting easily, they had to be processed in a special pulper and then driven to Maryland in giant trucks.
In 2010 an independent analysis found that the saving was equivalent to removing a single car from the road - at a cost of $475,000 per year. Wary of disappointing their environmentally concerned supporters, Democrats waited until the Republicans regained control of the House of Representatives in 2011 - and then suggested that the programme be killed. Republicans duly instructed the cafeteria to revert to using utensils and containers that actually worked.