Boing Boing on MSN14d
New world record: balanacing on a slackline between hot air balloons
Doing it between two flying hot air balloons at nearly 2.5 kilometers in the air takes the sport to a whole new level.  Freidi Kuehne and Lukas Irmler recently broke a slacklining world record, ...
Newser on MSN16d
A Slackline Record Is Shattered 1.5 Miles Off the Ground
A pair of German slackliners have crushed a world record, walking between two hot air balloons 1.5 miles above the ground.