Earth Day is on April 22nd. People say thanks to the Earth and learn ways to keep the Earth safe and clean. But saving the Earth is not just for grow - ups. Kids are also taking an active part in it. The American writer and film maker Lynne made a film called Young Voices for the Planet. It lists a lot of stories about different kids who help to keep our environment clean. Team Marine, US. A group of students at Santa Monica High School started an organization called Team Marine. They tell people why plastic bags are bad for sea animals and environment. In 2011, they successfully made lawmaker ( 立法者 ) in their city stop people using plastic bags. Felix, 15, Germany. In 2007, a 9 - year - old boy, Felix, started a club. Plant for the Planet. It encourages children around the world to plant trees in their own countries. Felix helped plant 25 million trees in Germany and 120 million trees worldwide. Alec, 17, US. When he was 12, Alec set up Kids VS Global Warming. It teaches kids about weather change and ways to stop the world getting warmer an d warmer. Alec travels widely to encourage people to help stop global warming. He has given more than 70 talks across the country. Olivia, 13, US. When Olivia was 11, she heard about the 2010 oil spill ( 漏油 ) in Gulf of Mexico. She painted 500 pictures of birds to raise money for the clean - up. She raised more than $200, 000 to protect birds and other wild animals. (262 words)