Tuesday is Earth Day. In fact it's the 44th anniversary of the first Earth Day in 1970.
The students at Tulsa's Undercroft Montessori School have been studying ways to better care for the Earth and our environment. So, on the 44th anniversary they celebrated Earth Day with a trashless picnic lunch.
Undercroft has 200 students of varying ages, and they have all been talking about ways to be better stewards of the planet; cleaner water, cleaner air and things we can do to help.
They decided to start with a picnic lunch, and eliminate, as much as possible, all the trash.
"The students had to think about how they can bring their lunches to school in reusable containers," said Nancy Davis, with Undercroft Montessori.
For Angela Carter and her daughter, Adella, that required some teamwork.
"We did it together. She told me we couldn't use paper napkins because that would be trash," Angela said.
So they used cloth napkins and reusable containers.
They even took a picture to remember the event, and for NASA.
"2014 is a big year for them. They've put out five satellites to gather information on the earth and our solar system. They wanted to compliment that with global photos, selfies of people around the world," Davis said.