For some who use in vitro fertilization to have a baby, more embryos are created than used -- leading to thousands in storage. Complicated legal, moral and personal questions over what to do with unused embryos.
The Environmental Protection Agency officially declares greenhouse gases a threat to public health and welfare. How the decision could affect the U.S. economy and the Obama administration’s position at the Copenhagen climate summit.
- Jeffrey Ball environment editor and columnist, Wall Street Journal His WSJ column "Power Shift" appears every other Friday.
- Eileen Claussen president, Pew Center on Global Climate Change and Strategies for the Global Environment
- Margaret Kriz Hobson energy and environment correspondent, National Journal
- Jeff Holmstead former assistant administrator for air and radiation at the Environmental Protection Agency (2001-05); now heads the environmental strategy section at Bracewell & Giuliani LLP.
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