Geologist Richard Alley examines countries that are moving toward renewable energy sources, such as Spain, where solar power is becoming the norm; and Brazil, where cars are no longer dependent on gasoline. Also: the cost of and time frame for transitioning to a cleaner energy system are discussed.
Author Sue Eisenfeld discusses the creation of Shenandoah National Park, which involved displacing thousands of longtime residents from Virginia's Blue Ridge mountains.Watch now →
Luis Araya immigrated to Arlington, Virginia from Bolivia in 1966, when very few Latinos lived in the county. He reflects on the changes he has seen over the years and the influence of Latinos in Arlington today.Watch now →