More than 80,000 people were on hand for Barack Obama's history-making speech at Denver's Invesco Field. People in the crowd said they were impressed by his passion, his ability to inspire and his feistiness.
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Jeff Brady is a National Desk Correspondent based in Philadelphia, where he covers energy issues and climate change. Brady helped establish NPR's environment and energy collaborative which brings together NPR and Member station reporters from across the country to cover the big stories involving the natural world.