scott keyes , a 28-year-old writer for think progress , is about to travel 20,000 miles on 21 flights , stopping by 13 countries along the way in europe and south and north america .
all this for free , a 28-year-old writer for think progress , is about to travel 20,000 miles on 21 flights that along the way he will be stopping by 13 countries in europe and south and north america .