The Energy Ball's shape takes advantage of the Venturi Effect, which usually measures the pressure created when water moves through a contained space. According to Inhabitat:

This spherical Energy Ball takes those principles and uses them to channel air through its six blades and around its generator. This results in highly efficient turbine that can take advantage of very low wind speeds.

I still think the main advantage of this device, aside from how awesome it looks, is that it doesn't make much noise. So you could easily imagine a suburb powered by these things mounted on roofs, spinning quietly in the breeze.

Home Energy [via Inhabitat]

At first blush, a humpback's fins looks like a pretty shoddy design for an airfoil — its leading edge is knobby and gnarled-looking. But the knobs actually reduce drag over the fin, allowing it to provide lift like an airplane wing only better because it works at lower speeds and higher angles to the wind.

Fish has shown that humpback designed fan blades lower power consumption by up to 20 percent on industrial fans. Now he's running tests on an experimental wind farm in Canada to see how much more power he can generate using wind turbines with fin-shaped blades.

Source: WhalePower via Discovery News

Al Gore may be the #1 movie star of the neo-green, anti-global warming set, but Hansen's the guy with the scientific chops — so when he talks, Congress listens. Sort of. More like they listen in the 'let's call a hearing, we're somewhat concerned' way, rather than the 'holy shit we'd better do something' way.

Now Hansen's got another shot at a hearing, and he wants the heads of big oil companies behind bars for what he sees as their purposeful attempts to trick the world into thinking that global warming is no big deal:

Speaking before Congress again, he will accuse the chief executive officers of companies such as ExxonMobil and Peabody Energy of being fully aware of the disinformation about climate change they are spreading.

He is also considering personally targeting members of Congress who have a poor track record on climate change in the coming November elections. He will campaign to have several of them unseated. Hansen's speech to Congress on June 23 1988 is seen as a seminal moment in bringing the threat of global warming to the public's attention. At a time when most scientists were still hesitant to speak out, he said the evidence of the greenhouse gas effect was 99% certain, adding "it is time to stop waffling".

He will tell the House select committee on energy independence and global warming this afternoon that he is now 99% certain that the concentration of CO2 in the atmosphere has already risen beyond the safe level.

The current concentration is 385 parts per million and is rising by 2ppm a year. Hansen, who heads NASA's Goddard Institute for Space Studies in New York, says 2009 will be a crucial year, with a new US president and talks on how to follow the Kyoto agreement.

He wants to see a moratorium on new coal-fired power plants, coupled with the creation of a huge grid of low-loss electric power lines buried under ground and spread across America, in order to give wind and solar power a chance of competing. "The new US president would have to take the initiative analogous to Kennedy's decision to go to the moon."

His sharpest words are reserved for the special interests he blames for public confusion about the nature of the global warming threat. "The problem is not political will, it's the alligator shoes - the lobbyists. It's the fact that money talks in Washington, and that democracy is not working the way it's intended to work."

Anyone who's willing to speak truth to power is OK in my book, but one hopes Dr. Hansen isn't committing political suicide here. Going before Congress with plans to strip out lobbyists' influence and jail the leaders of some of the most profitable companies in America? Noble, but not likely. And maybe you don't want to mention the part about trying to have members of Congress unseated? Telling people 'listen to me or I'm going to have you fired' isn't really a good idea unless you're their boss.

Source: The Guardian, via SciGuy