Science

With the release of a report Tuesday detailing the findings of an independent board's investigation into the Feb. 1 breakup of the space shuttle Columbia, experts discuss reaction to the report and what its recommendations may mean for NASA's future.

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Growing levels of coastal erosion are washing away California's beaches. Jeffrey Kaye of KCET Los Angeles explores the problem and restoration efforts.

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Last week's sweeping power outages heated up the debate over the country's energy policies. Kwame Holman reports.

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A power grid failure on Thursday left much of the northeastern U.S. and parts of Canada without electricity. Experts discuss the structure and vulnerability of the U.S. electrical grid system.

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President Bush announced Monday that his choice to head the Environmental Protection Agency is Utah Governor Mike Leavitt, a Republican and an advocate of shifting environmental regulation to the states.

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President Bush has tapped Utah Governor Mike Leavitt to lead the Environmental Protection Agency. Experts assess the likely political and environmental impact of the Leavitt nomination.

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President Bush nominated Utah Governor Mike Leavitt to head the Environmental Protection Agency. Betty Ann Bowser reports on the nimonee's political background.

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A battle over federal wilderness designations in Utah ended when the state convinced the federal government to drop certain land restrictions, an agreement environmentalists say will endanger pristine areas.

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Scientists said they discovered a planet that is some 9 billion years older than any known previously. Jeffrey Brown discusses the finding with Alan Boss of the Carnegie Foundation.

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Betty Ann Bowser reports from Hamilton, Montana, where the National Institutes of Health wants build a new laboratory to study some deadly pathogens.

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