On April the 22 1970, 20 million Americans came out to demonstrate for a healthy, sustainable environment. Some see it as the birth of the modern environmental movement. Show more
Discover 11,128,835 listings and 280,259 playable programmes from the BBC
On April the 22 1970, 20 million Americans came out to demonstrate for a healthy, sustainable environment. Some see it as the birth of the modern environmental movement. Show more
The BBC's international radio station
