51st anniversary of Earth is being celebrated today

This year, Earth marks its 51st anniversary of celebrating Earth Day. The Earth Day 2021 theme is Restore Our Earth and features five primary programs.
The day came about as a collective response to an environment in crisis namely oil spills, smog, polluted rivers and many more.
On April 22, 1970, 20 million Americans took to the streets and cities to protest against ignorance towards violence and demand fresh ways to advance the planet.
Earlier, The theme for 2020 is climate action which presents itself as the biggest challenge to the future of humanity.