President Barack Obama steps off the stage after speaking about health care reform on Monday at Walter F. Ehrnfelt Recreation and Senior Center in Strongsville, Ohio. Charles Dharapak/AP
Seeds encased in acrylic poles are used for the facade of the Seed Cathedral, the centerpiece of the UK Pavilion at the Shanghai World Expo site in Shanghai, China, on March 15. The 60-foot high, cube-like Seed Cathedral is covered by 60,000 slim, transparent acrylic rods. Aly Song/Reuters
This video frame grab provided by NASA shows a Lyssianasid amphipod, which is related to a shrimp, beneath a massive Antarctic ice sheet. A NASA team lowered a video camera to get the first long look at life underneath an ice sheet and for the first time, saw the shrimp-like creature and a jellyfish. NASA/AP
A woman walks through water standing in the street of Old Town Alexandria in Virginia on Monday after heavy rains fell throughout the weekend. Larry Downing/Reuters
A child in costume has makeup applied to her before a ritual ceremony to welcome 'Nepi,' Bali's Day of Silence and the Hindu New Year at Monumen Nasional in Jakarta, Indonesia, on Monday. Beawiharta/Reuters
Honk Kong's Victoria Harbor is partly covered by fog on Monday. The fog is common in springtime in Hong Kong and can greatly affect shipping and flights in the region. kin Cheung/AP
Dallas Seavey arrives at the Unalakleet, Alaska, checkpoint on Sunday during the 2010 Iditarod Sled Dog Race. Bob Hallinen/Anchorage Daily News/AP
In Targu Secuiesc, Romania, a Hungarian girl rides a pony during celebrations marking the anniversary of the 1848 revolution against the Hapsburgs, one of the most important royal houses in Europe at the time. Thousands of ethnic Hungarians gathered in towns across Romania's Transylvanian region to celebrate the Hungarian holiday. Vadim Ghirda/AP
From left: Lucio Garcia, Victor Hugo Angulo, and Francisco Sanchez, were arrested early Monday for their alleged ties to the Arellano Felix drug cartel as they stand next to displayed weapons during a presentation to the media in Tijuana, Mexico, on Monday. Guillermo Arias/AP
The Hurva synagogue is seen lit up in Jerusalem's Old City on Monday. The synagogue, on which construction first began in the 18th century and was most recently destroyed during a war in 1948, re-opened officially on Monday. Bernat Armangue/AP
Track and field's world governing body is disputing charges leveled by both a British newspaper and German broadcaster that doping continues to be a problem in the sport.
The world governing body for track and field (IAAF) fought back on Tuesday against media reports of suspected widespread doping in the sport, rejecting accusations it failed to investigate dubious drugs test results properly.