Democrats started pushing climate change legislation a month before the U.S. participates in climate talks in Copenhagen. Kwame Holman reports.
In the latest in a series about innovation amid economic turmoil, Tom Bearden reports on efforts to convert algae into clean fuel.
On the Southeast Asian island of Borneo, the Asri Clinic doesn't take credit cards. Instead, the clinic accepts payments that improve the local ecosystem, be it seedlings for replanting, eggshells for composting, even manure. Fred de Sam Lazaro reports.
The H1N1 swine flu virus is now widespread in 46 states, has hospitalized more than 20,000 people and caused more than 1,000 deaths in the U.S., Dr. Thomas Frieden, director of the Centers for Disease Control and Prevention, said Friday.
The Center for Disease Control and Prevention said Friday that the H1N1 flu's effects have already matched those of the seasonal flu. Ray Suarez reports.
Throughout the nation, concern over a possible H1N1 vaccine shortage is causing chaos at hospitals. Betty Ann Bower visits a clinic in Maryland for more.
PARIS | The complete results of the first vaccine trial to ever show some protection against HIV were released Tuesday, and researchers sought to refute criticism that the study's results could be weaker than indicated.
Scientists dig deep into Greenland's ice to unearth the history of climate change. Climatologist and Climate Central correspondent Heidi Cullen reports.
Green technology can take many forms, be it in eco-friendly light bulbs, hybrid cars, or wind turbines. It can even take the form of homework, as in the case of students competing in the Department of Energy's "Solar Decathlon."…
The NewsHour airs an excerpt from a NOVA ScienceNow report on efforts to repair the Hubble Space Telescope.
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