American adventurer Colin O'Brady just made it across Antarctica alive, alone, and way ahead of schedule. That feat makes O'Brady the first person to ever cross the southern continent on a solo, unsupported mission without getting resupplied or using a kite. "This is something that no one in history has ever accomplished, and people have been trying for 100 years," O'Brady told Business Insider before he started the record-breaking trek. According to his live-tracking map, O'Brady reached his finish line on the Ross Ice Shelf on December 26. He quickly followed up with photo proof, confirming he'd skied 932 miles...