The National Academy of Sciences report concludes the Earth is getting warmer and humans are helping cause it.
A look at the ethics behind testing for genetic diseases.
Spencer Michels examines the controversies surrounding power plant construction in California.
Margaret Warner and experts discuss the role of conservation and alternative energy sources.
Joshua Smith, a PhD candidate at the University of Pennsylvania, talks about his recent discovery: the second largest dinosaur skeleton on record.
What is the quality of health information online?…
A background report on the Bush administration's energy proposals focusing on fossil fuel supplies.
Experts debate the Bush administration's energy proposals focusing on fossil fuel supplies.
The Bush energy plan calls for a reexamination of nuclear power. Experts debate President Bush's plans for the controversial energy source.
Kwame Holman outlines President Bush's energy plan and the initial reactions.
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