An auto expert and former Energy Department adviser says the policies of a handful of states have pushed the development of electric vehicles. How the U.S. could win the global competition for the car of the future.
Fifty years ago, Jonas Salk announced a vaccine against polio. But the disease remains far from conquered. A survivor of childhood polio examines the impact of polio on our culture and what it still can teach us.
- Marc Shell professor of literature at Harvard University and author of "American Babel: Literatures of the United States from Abnaki to Zuni Stutter."
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