March 18 (UPI) --Serial Guinness World Record-breaker David Rush may have created a new title category by juggling in all 63 U.S. national parks. Rush, who holds the most concurrent Guinness World ...

David Rush, who holds the most concurrent Guinness World Records, attempted the record for the most behind-the-back passes off a wall in 30 seconds during a visit to Guinness World Records ...