Ex-Marine plans to beat PTSD by trekking every country

By Maggie Hiufu Wong, CNNUpdated 25th July 2014
"On some days my entire beard would be covered in ice," Nanavati says of his Greenland trip.
"On some days my entire beard would be covered in ice," Nanavati says of his Greenland trip.
courtesy Akshay Nanavati
Nanavati's mission to run across every country in the world will take about 20-25 years, he says.
Nanavati's mission to run across every country in the world will take about 20-25 years, he says.
courtesy Akshay Nanavati