NPR's John Burnett reports from Big Bend National Park in Texas, where the drifting smoke from coal-burning power plants hundreds of miles away in Mexico has made the park one of the most polluted in the country.
Copyright 2000 NPR
NPR's John Burnett reports from Big Bend National Park in Texas, where the drifting smoke from coal-burning power plants hundreds of miles away in Mexico has made the park one of the most polluted in the country.
Copyright 2000 NPR