It's a nod to NASA satellites, which constantly keep an eye on Earth from space and here's how it works:
Step outside and take a picture of yourself wherever you are on Earth then post it to social media using the hashtag #GlobalSelfie.
Tucker Elementary School got in the game this morning, posting the picture you see above to the City of Lowell Facebook page.
If you took part in a local Earth Day event - post a picture to our Facebook page.
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