Some cities and communities will hold Earth Day activities and celebrations for an entire week, not just on April twenty-second.

VOA: special.2010.04.21

She says that Earth Day is still very much about activism and fighting for the environment on a local level.

VOA: special.2010.04.21

The hard work of this grassroots effort resulted in the first Earth Day on April twenty-second, nineteen seventy.

VOA: special.2010.04.21

"And half of the people on planet Earth every day use wood or biomass for cooking.

VOA: special.2010.02.01

On April twenty-second, nineteen seventy, environmental activists organized the first ever Earth Day.

VOA: special.2010.01.17

Earth Day Network works on environmental programs around the world.

VOA: special.2010.04.21

And you get presents for eight days because -- I mean seven days, because God made the, created the earth in seven days and on the seventh day he rested."

VOA: special.2009.12.21

And even though historically there's no indication that Jesus Christ was born in December, that's just the day that has traditionally been used to celebrate the birth of the Son of God on Earth.

VOA: special.2009.12.21

For the past week people gathered on the National Mall in Washington,DC to take part in Earth Day activities.

VOA: standard.2010.04.25

On the the 40th anniversary of Earth Day, this warming planet we live on is posing serious new challenges to human civilization: increasingly severe droughts, floods,and storms across the globe, and slowly rising ocean levels.

VOA: standard.2010.04.21