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Mauna Loa Birthplace of Global CO2 Monitoring December 21, 2009 Report A global network of carbon dioxide sampling sites was born decades ago at Mauna Loa in Hawaii.

Google's Goal: Digitize Every Book December 30, 2009 Report In a new era of E-books, Internet giant Google is attempting to offer millions of books online. Spencer Michels looks at the controversial plan.

Alternative Fuels January 28, 2009 Carmakers are looking to alternative fuels such as ethanol, natural gas and hydrogen to improve fuel economy, decrease greenhouse gas emissions and transition from foreign to domestically produced fuels. In this in-depth report, learn about the science and politics of alternative fuels, and explore how your car's fuel costs and emissions stack up to similar alternative fuel vehicles.	Contact Us Sign up for e-mail alerts, request science DVDs or send us comments on our science coverage. RSS Feeds Get the latest science updates and in-depth reports. Podcasts Download audio versions of our science reports.

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