On Earth Day, April 22, NASA and the National Science Foundation (NSF) celebrate 20 years of international collaboration in 114 countries to further the scientific exploration of Earth's environments and climate.

The Global Learning and Observations to Benefit the Environment (GLOBE) science and education program, created on Earth Day in 1995, connects students, teachers and professional and citizen scientists with opportunities to participate in science data collection by conducting real, hands-on science in their local communities.

"NASA has been one of the proud sponsors of GLOBE since its inception, and we're pleased to be a part of a program that helps inspire future leaders and adds to knowledge of our planet," said NASA Administrator Charles Bolden, according to a press release. "GLOBE provides students and the public worldwide with the opportunity to contribute meaningfully to our understanding of the global environment and climate. The program not only engages students in learning about their local environment, it also empowers them to play an active role in adding to global data about our home planet."

This week, schools around the world are observing the program's 20th anniversary and Earth Day with special science activities, including a data entry challenge to collect extensive Earth science data via a new mobile app.

"The National Science Foundation knows the importance of training more students in the STEM fields," said France Córdova, director of the NSF, according to the press release. "We are excited and delighted at how GLOBE stimulates curiosity, sparks interest in STEM careers, and above all, inspires in so very many students a love of science that will last a lifetime."

To get involved in NASA's Earth Day #NoPlaceLikeHome campaign, click here.