The exception would be if you have an international flight, and are making the connection in a different country than you started in, then you may have to clear customs at the connecting airport rather than the final destination.n that case you have to get your bags, clear customs, re-check your bags (or at least drop them off at specific location, depending on the airport), and clear security again. When the airline tells you to check in 2 hours before departure, they mean it regardless of whether you're checking bags or not.
Wind energy is one of the fastest growing sources of electricity in the world. The United States surpassed Germany last year to become the world leader in wind energy installed; 121,188 MW of wind energy were installed globally by the end of 2008, with that number expected to increase to 152,000 MW by the end of 2009.
Wind generators, or wind turbines, have become a popular symbol of clean carbon free electricity. Unlike other sources of renewable energy such as hydro-electricity or geothermal, wind and solar power are variable producers of electricity. Since the wind does not always blow nor the sun always shine, any given wind turbine will never produce its full capacity rating for an extended period of time.