The ancient oil boiler in our 8 unit condo needs to be replaced and we are exploring the options, specifically gas fired heat pumps. [more inside]
posted by lapsang on Mar 6, 2009 - 5 answers

Next week, I'm going to have an extraordinary opportunity: I get to test-drive the BMW Hydrogen 7 in New York City. You can bet I'll be doing a ton of background research on the car over the weekend, but I'd love your ideas and tips about what to look out for and pay attention to during my joyride. [more inside]
posted by foxy_hedgehog on Sep 21, 2007 - 16 answers

Solar photovoltaic fabric. I'm trying to find or recall about a particular type of technology that I half-remember, as well as find out more about the current state of the art for flexible and/or fabric and/or imprinted solar panels. [more inside]
posted by loquacious on Jun 6, 2007 - 4 answers

PhysicsFilter: Is there any reason why a giant radiometer couldn't be used as a way to generate electricity?
posted by spilon on Dec 18, 2005 - 12 answers