Photo Galleries
The 10 most valuable global brands Apple has the most valuable brand in the world, up 67% over the last year, according to a BrandZ ranking. More
A life's work: Photos by Mary Ellen Mark The subjects of Mary Ellen Mark's photography ranged from celebrities to world leaders to those at the fringe of society, including prostitutes and the homeless. More
The 8 biggest job-killing companies Unemployment is at its lowest level since 2007, but some companies are still cutting lots of jobs. More
Special Offer
3 of 10
BACK NEXT
Mina fastens her New Tribe saddle before the first tree on day 2. The rope and pulley system seen here allows the climber to ascend the tree on just one rope.

NEXT:
Last updated March 19 2008: 1:26 PM ET