Earth Day was first celebrated in the U.S. in 1970.
Monday is Earth Day and the official theme for 2024 is "Planet vs. Plastics."
The main message this year is to raise awareness of the health risks of plastics, with a goal to phase out the use of single-use plastics.
Earth Day was first celebrated in the U.S. in 1970. It now includes a wide range of events around the world.
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