If you have the means, switching to solar energy or a heat pump is also “a huge gift to the planet, and, over time, a huge win to your own pocketbook and independence” said Bill McKibben, founder of Third Act, a climate and democracy action group for people over 60.

In the '90s, Hayes organized a global Earth Day — observed by an estimated 200 million people in more than 140 countries, turning it into an international event. In the U.S., Earth Day is celebrated each year on April 22, according to the Environmental Protection Agency.

Today we celebrate Earth Day. This holiday was first celebrated in 1970. It is a great day to think about the beautiful environment