Earth Day is a day that is intended to inspire awareness and appreciation for the Earth’s natural environment.
It is an annual event, celebrated on April 22, on which events are held worldwide to demonstrate support for environmental protection.
Earth Day was first celebrated in 1970, and is now coordinated globally by the Earth Day Network, and celebrated in more than 192 countries each year.
Visit Earth Day Canada:
https://earthday.ca/
Check out this article by Cara McGoogan (The Telegraph) and the Google Doodle Earth Day 2016 video.