Marta Karpiel’s personal donations have helped remove more than 350 landmines in Cambodia through the nonprofit, Freedom Fields USA. She developed a successful fundraising tool in the form of a map that lets donors choose the parcels of land that they are funding to clear, which has raised more than $250,000. She also handles all the marketing and promotion for the organization and secured a $50,000 grant from the U.S. State Department. Karpiel raised money to build a school on cleared land and provide backpacks, books and supplies for 200 children.