A massive forest fire has been raging in Alberta, Canada, for nearly a month. Scientists say warmer, drier weather has increased the frequency and intensity of fires. For this month's Environmental Outlook: wildfires, climate change and threats to North America’s forests.
Global health experts warn that avian flu threatens to become a global pandemic. Diane talks with top medical and public health experts about avian flu and what’s being done to head off a possible crisis.
- Mei Fong staff reporter of "The Wall Street Journal"
- Dr. Nancy Cox chief of the Centers for Disease Control and Prevention influenza branch, and director of the World Health Organization's Collaborative Center for Influenza Reference and Research
- Dr. Anthony Fauci Director of the National Institute of Allergy and Infectious Diseases/NIH
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