Podcast:History Daily Published On: Mon Apr 22 2024 Description: April 22, 1970. Earth Day helps spark the environmental movement and quickly grows into an international event. Support the show! Join Into History for ad-free listening and more.History Daily is a co-production of Airship and Noiser.Go to HistoryDaily.com for more history, daily.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.