Who Would Sign Up for a One-Way Ticket to Mars?

A Dutch non-profit venture called Mars One has plans to land two men and two women on the planet Mars. More than 200,000 people have volunteered to go on the one-way mission— with departure planned for 2025.

Sonia Van Meter, who’s one of 100 finalists for the expedition, describes herself as "a political consultant with a husband, two extraordinary stepsons and a black lab mix." She says she "didn’t think twice" when she heard she could take "a one-way trip to another planet."