In 2009, 91.2% of Seattle's electricity was from hydroelectric sources, and in 2010, 87.9% was hydro. Is the hydro capacity maxed out, or will it scale up to meet additional demand and maintain that ratio? Here's what I'm getting at: If I were to use more electricity than now, will that incremental power effectively come from non-renewable sources rather than ~90% hydro?
posted by hodgebodge on Jun 6, 2012 - 14 answers

The Australian government is working out the details for a tax on carbon. Where will the money raised in this tax go? What will it be used for? [more inside]
posted by robotot on Apr 2, 2011 - 8 answers

I'd like to ask a relatively simple question – what would happen if we switched of traffic lights when we didn't really need them? I'd like to know from an environmental aspect what effect turning off the nations traffic lights would have towards saving electricity and reducing emissions. From a social point of view could the nation's road users manage with such a change? And from a technical innovation view point – could it and should it happen and if so how?
posted by SarahM on Sep 10, 2008 - 22 answers

Is it better for the environment to drive or fly a long distance? [more inside]
posted by JPDD on Oct 12, 2007 - 16 answers