Earth Day

Each year, Earth Day — April 22 marks the anniversary of the birth of the modern environmental movement in 1970. On April 22,1970, 20 million Americans took to the streets, parks, and auditoriums to demonstrate for a healthy, sustainable environment in massive coast-to-coast rallies.
1990, Earth Day went global, mobilizing 200 million people in 141 countries and lifting environmental issues onto the world stage. Earth Day 1990 gave a huge boost to recycling efforts worldwide.
Nowadays Earth Day has reached into its current status as the largest secular observance in the world, celebrated by more than a billion people every year, and a day of action that changes human behavior. 

I dug out some photos on my hard disk for this Earth Day:

I am happy we have the holiday Earth Day when we remember that our beautiful planet deserves careful treatment.