Radio Free never takes money from corporate interests, which ensures our publications are in the interest of people, not profits. Radio Free provides free and open-source tools and resources for anyone to use to help better inform their communities. Learn more and get involved at radiofree.org

Panspermia is a theory that life can spread naturally between planets. Amir Siraj studies how life on Earth might have first arrived from another world. He is the youngest person included in this year’s Forbes 30 Under 30 list of scientists, and is a student at Harvard University and the New England Conservatory of Music.