a team of 23 scientists and explorers are embarking on an unprecedented journey, circumnavigating the globe and crisscrossing some of the most challenging terrain anywhere. This modern-day adventure began in New York and has taken them through Asia, circling the top of the planet and looping all the way back up again. Neetu Garcha reports that along the way, they are pushing the limits of human endurance and conducting groundbreaking scientific research.