Tony Iacconi of Australia competes in the Mens Wakeboard event in the Moomba Masters Water Ski International Invitational Championships during the Moomba Festival on March 12, in Melbourne, Australia. The 2012 Moomba Parade is themed "Melbourne is delicious", with floats, music, local community groups and performers taking part.

Commuters travel in a carriage on a London Underground train on March 5, in London, England. London's underground rail system, commonly called the tube, is the oldest of its kind in the world dating back to 1890. It carries approximately a quarter of a million people around its network every day along its 249 miles of track and 270 stations. The network has undergone several years of upgrade work and refurbishment in preparation for the Olympic Games which take place this summer. During this time the tube is expected to carry millions of visitors to and from the Olympic Parks.

A train moves along a platform at an Underground station on February 28, 2012 in London, England.

Commuters make their way on the escalator at Angel underground station on March 5, in London, England.

A commuter makes his way through an underground tube station on February 14, in London, England.

A conductor signals the departure of a train at an Underground station on March 5 in London, England.

Chariot riders battle in a "Ben Hur"-like chariot race at Chariot Wars during a three-day Mini Bike Winter Olympics Saturday, Feb.18, in Portland, Ore. Armed, variously, with all manner of foam-padded apparatus, at least five teams did battle on Saturday under gray skies for the pleasure of hoisting a three-foot-tall, homemade skull-bearing piece of welded junk, called the "Ben Hurt" trophy.

Chariot rider Jon Penfold drinks from the "Ben Hurt" trophy following the "Ben Hur"-like chariot race at Chariot Wars during a three-day Mini Bike Winter Olympics Saturday, Feb. 1, in Portland, Ore. Armed, variously, with all manner of foam-padded apparatus, at least five teams did battle on Saturday under gray skies for the pleasure of hoisting a three-foot-tall, homemade skull-bearing piece of welded junk, called the "Ben Hurt" trophy.

Russian Prime Minister Vladimir Putin, right, shows a hold to a young judo wrestler in a regional judo center at the Arena sports complex in the Siberian city of Kemerovo, about 3000 kilometers (1,850 miles) east of Moscow, Russia on Jan. 24, 2012, during his visit to the region. Putin is known for his passion for judo, in which he has a black belt.

Russian Prime Minister Vladimir Putin talks to young judo wrestlers at a regional judo centre in the city of Kemerovo, Jan. 24.

Russian Prime Minister Vladimir Putin, left, gives a thumbs up as he watches judo wrestlers training in a regional judo center in the Arena sports complex in the Siberian city of Kemerovo, about 3000 kilometers (1,850 miles) east of Moscow, Russia on Jan. 24.

Animal activists, left, confront pro-bullfighting, right, activists prior to the last bullfight at 'La Monumental Bullring' in Barcelona, Catalonia, Spain, on Sept. 25. In July 2010, the parliament of Catalonia ratified the decision to ban bullfighting in the region.

Spain's bullfighter Jose Tomas performs at the Monumental bullring in Barcelona, Spain, Sunday, Sept. 25. Spain's powerful northeastern region of Catalonia bids farewell Sunday to the country's emblematic tradition of bullfighting with a final bash at the Barcelona bullring.

Spanish bullfighter Jose Tomas performs a pass on a bull on September 25, in Barcelona's Monumental arena for the last time today before a ban against the centuries-old blood sport comes into effect in Spain's northeastern Catalonia region.

Reindeers and their jockeys during the Reindeer Cup Championship Drives 2011 in Inari, Lapland, northern Finland, on March 19 There are 51 Reindeer Herding Cooperatives in Finland of which 20 took part in the 2011 Cup. When autumn arrives reindeers are separated. Some go to the slaughterhouse, other are kept for breeding and a few males are neutered and trained as work reindeers, mainly for pulling sledges and racing. Once that has been done, local breeder cooperatives like to find out who owns the fastest and strongest reindeer. With the onset of spring, the cooperatives hold meetings to review the events of the past year.

Two childen on a sled watch the Reindeer Cup Championship Drives.

Reindeers pull their jockeys during the Reindeer Cup Championship Drives 2011 in Inari, Lapland, northern Finland, March 19.

A man walks in specially made shoes at the Reindeer Cup Championship Drives.

Afghans watch cock fighting in Kabul, Afghanistan, on Friday, March 11.

Artificial claws are attached to the legs of roosters during a cock fight in Kabul on Friday.

An Afghan man refreshes his rooster with a spray of water during a cock fight in Kabul on Friday.

Afghans watch cock fighting in Kabul on Friday.