Monday is Earth Day
Updated: Monday, April 22 2013, 08:44 AM EDT
WEST MICHIGAN (NEWSCHANNEL 3) - Monday is Earth Day and environmental groups around the world will organize rallies and demonstrations to help raise awareness about environmental concerns.
The first Earth Day on April 22, 1970 is credited with starting the modern environmental movement.
An estimated 20-million Americans participated in the first Earth Day.
Now, more than 40 years later, the day is observed by a billion people in 180-nations around the world.