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Earth Day is April 22 of every year. April 22, 2020 will mark 50 years of Earth Day.
The theme for Earth Day 2020 is climate action. The enormous challenge — but also the vast opportunities — of action on climate change have distinguished the issue as the most pressing topic for the 50th anniversary. Climate change represents the biggest challenge to the future of humanity and the life-support systems that make our world habitable.
Read more about Earth Day here: https://www.earthday.org/earth-day-2020/