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.
Diane talks with journalist and historian Haynes Johnson and other guests about former President Ronald Reagan, who died Saturday June 5 at the age of 93.
- David Frum is a resident fellow, American Enterprise Institute; author of "Comeback: Conservatism That Can Win Again", and co-author of "An End to Evil: What's Next in the War on Terror;" former speechwriter and special assistant to President George W. Bush (2001-02).
- Haynes Johnson journalist, historian and author
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