From: Lindsay Fraka
Watch the Knife Show clan shred Mammoth over the holiday weekend and Casey Wrightsman session the Katal Landing Pad that was temporarily set up there.
Josh Dueck's life changed dramatically in 2004, when he became paralyzed from the waist down in a skiing accident. But he not only kept the "freedom" he enjoys on the slopes, aboard a sit-ski, he excelled in competitions and pioneered backcountry skiing on the device. This past week he achieved another remarkable milestone: performing the first documented back flip in the snow on a sit-ski (fast-forward to the 2-minute mark to see the trick).
More on Yahoo: Scientists reach..