Gaylord Nelson, the late U.S. senator and governor of Wisconsin, is considered the founder of Earth Day, which started in 1970.

It's been more than 50 years since the first Earth Day in the United States. On April 22, 1970, people gathered at events across the country to raise awareness about the environmental issues ...

On April 22, 1970, Philadelphia hosted a six-hour festival in Fairmount Park that drew 25,000 to 30,000 clean-air lovers. The bow-tied W. Thacher Longstreth agreed to meet a few young people who ...

Climate conditions affecting the planet continue to develop since the first Earth Day was celebrated in 1970. CBS News' David Schechter breaks down the newest challenges the Earth is facing.

The theme for Earth Day 2025 is 'Our power, Our planet', which focuses on renewable energy. The organisers are calling for renewable energy generation to be tripled by 2030 around the world. They are ...