Tuna, a reporter at the San Francisco bureau of the Wall Street Journal, and Dustin Moskovitz, Facebook co-founder, met on a blind date in 2009 at the recommendation of a friend.
Tuna first learned about charity evaluator GiveWell and the movement for effective giving after reading The Life You Can Save, a book by ethicist and philosopher Peter Singer, and the couple was introduced to the ideas of effective altruism.