The new University of Colorado A-Line service opened as scheduled. Free rides were offered Friday and Saturday to thousands of happy children of all ages to enjoy the 23-mile, 37-minute trip from Union Station to Denver International Airport.
On Earth Day, NPR looked at the intersection of the Paris Climate Agreement, which Secretary of State John Kerry signed at the U.N. on Friday, and President Obama's Clean Power Plan which has been given a pause by the Supreme Court.
The environmental awakening of the 1970s led to landmark federal laws that have helped heal our natural systems. The growing “Rights of Nature” movement seeks to create new protections to respond to emerging ecological threats.