Earth Week Earth Day 50th anniversary: Exploring the 1990s Written by Sustainable Review April 21, 2020February 6, 2023 Saving Bookmark this article Bookmarked Welcome to Earth Day, 1990s edition. The U.S. population was 250 million. The Berlin Wall was collapsing. Fresh Prince, Home Improvement and Friends filled our TV screens. Gameboys were the ‘next big thing’. Yes, frosted tips, flat tops and boy bands everywhere. These are the biggest events of the environmental movement of the 1990's that dominated the decade.