Mr Green's switch offers a hint about government policy towards banks.
The switch to Sunoco Green E15, the official fuel of NASCAR and a renewable, low-carbon power source, reduced greenhouse gas emissions by 20% compared with unleaded gas.
Dunga has already won the first battle against his former boss - Brazil will wear their iconic yellow shirts, with South Africa having to switch to a green kit.
Hackers eventually got in on the game, using mail-order infrared transmitters to switch red lights to green.
The rotating toggle allows users to quickly switch between four modes: green, library, balanced and gaming.
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Dedicated lanes give buses an uncongested path, and traffic-signal priority gives buses the power, once reserved for emergency vehicles, to switch signals from red to green as they approach.
Up top are a power switch and a light that flashes green for a moment when the reader is powered on.
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And if you're ready to make the switch, check out our guide to 24 gorgeous green lamps that look great with LED bulbs.
We also saw Rice University flip the switch on its new Epiphany Skyspace -- a green-roofed pavilion that's topped with a brilliant blue canopy of light.
The switch comes at a time when the sport is stepping up its efforts to go green.
In fact, Tuncak points out, some big businesses are calling for improved U.S. regulation to help level the playing field between those who are leading in green chemistry innovation and those who are not, and between those who have been forced to switch to alternatives in order to do business in Europe and those who have not.
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