A pair of German daredevils took a walk across a slackline suspended between two hot air balloons and earned a world record for their stroll at an altitude of 8,202 feet.

"Friedi Kuehne and Lukas Irmler set a new world record by walking a slackline suspended between two hot air balloons at an altitude of 2,500 meters (8,202 feet), breaking the previous record of ...