Jan. 28 (UPI) --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 Kühne ...

A helicopter crash near Superior killed four people, including an experienced pilot and his three nieces, after allegedly striking a kilometer-long slackline. The FAA had issued a safety alert for the ...

A helicopter appears to have crashed into a slackline strung across part of a remote Arizona canyon for an extreme tightrope-style activity, killing all four passengers. The slackline was "more than ...

A sightseeing helicopter piloted by an Oregon businessman slammed into a slackline just hours before he was set to be married — killing him and three nieces in a gut-wrenching New Year tragedy. David ...