Or what will help you figure out a way to use the sun and the wind to power a city and give us new energy sources that are less polluting.
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"We will work with businesses and communities to use the sun's energy to reduce our reliance on fossil fuels by installing solar panels on 1 million more roofs around our nation by 2010, " promised President Bill Clinton.
All organic crop rotations contain three to four years of no ploughing because grass leys use the sun's energy to fix nitrogen for subsequent crops in place of oil-based artificial fertiliser.
It's trying to sell its solar product to industrial customers, including coal-fired plants, which would use both the sun and coal to make steam.
" We already have everything we need to use the sun, the wind, geothermal power, conservation and efficiency to solve the climate crisis everything, that is, except a president who inspires us to believe, "Yes, we can.
"We already have everything we need to use the sun, the wind, geothermal power, conservation and efficiency to solve the climate crisis everything, that is, except a president who inspires us to believe, 'Yes, we can, '" Gore said.
Solar panels use light energy from the sun to generate electricity through the photovoltaic effect.
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Photovoltaic panels use the sun's photons to make electrons hop around, producing electrical current, while solar thermal uses photons to move whole molecules--that is, to produce heat.
Within their bodies they harbor highly productive algae -- a form of marine plant life -- that can "fix" carbon, use the energy of the sun to conduct photosynthesis and produce sugars.
By getting cable companies to use its Java OS for Consumers, Sun is betting that the cable companies will use Sun servers and workstations when it comes time to upgrade their infrastructure.
Ovshinsky and his scientists had found a way to use thin films of amorphous silicon to turn the sun's energy into electrical power.
They are believed to use the position of the sun as a reference point and can compensate for its movement across the sky when calculating the route they need to return home.
Kathy Banks from The Sunbed Association said the statistics were alarming as their own members and most others salons would not permit anyone under the age of 16 years to use sun beds.
The model that Sun wants Wall Street to use in thinking about Sun is that of a wireless carrier like Nextel, which sells its technology any way customers want.
If such heaters were covered with thermoelectric generators the sun's rays could be put to sequential use.
In winter, experts say, people in the northern half of the U.S. don't receive enough UVB rays from the sun to make vitamin D, regardless of whether they use sunscreen.
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But it was important to keep the risks associated with moderate sun bed use in perspective, she added, with the IARC classification putting it in the same category as sunlight, red wine and beer.
One of the ironies of the power crisis is that, instead of profiting from increased prices, small generators that use renewable sources of energy such as the wind and the sun have been driven almost to collapse by the failure of the utilities to pay them.
"Roger was 24-7 before anybody thought of that term, " said John Barron, Ebert's former boss at the Sun-Times, who said he was among the first reporters to use a computer or send emails.
Indeed, some at the meeting argued that if aliens were to use an astronomical phenomenon called gravitational lensing (in which the gravitational field of the sun bends and amplifies radio waves and light from Earth), human signals could be amplified to the point where even the light from cities would be visible.
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To use that excess electricity (obviously, only excess when the wind is blowing just right, or the Sun shining) to electrolyse water by passing it through a fuel cell and then store the resultant hydrogen.
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