A girl lights candles to mark the first anniversary of the massive disaster that devastated Japan's northeast one year ago. The Japanese government has been heavily criticised over what many perceive as its sluggish response to the nuclear meltdown at the Daiichi Power Plant.
STEPHANE DE SAKUTIN/AFP/Getty Images
Thousands of protesters marched through Johannesburg to protest new tolls on highways between Johannesburg and nearby Pretoria, which unions say are hurting the poor. The new toll system has created a huge public outcry.
JIM WATSON/AFP/Getty Images
A voter in Ohio casts his ballot on Super Tuesday, in which ten states headed to the polls to weigh in on the Republican presidential nomination.
An exiled Tibetan youth attends a rally on the 53rd Tibetan National Uprising Day. Hundreds of exiled Tibetans marked the anniversary of 1959 Tibetan rebellion against China, which forced the Dalai Lama to flee Tibet.
Relatives of a young boy surround his body at the morgue of Kamal Edwan Hospital in Beit Lahia in the northern Gaza Strip. Air attacks launched from Israel have killed at least 21 people in Gaza since they began on Friday.
A box full of KONY 2012 campaign posters at the offices of the Invisible Children Movement. The organisation's video calling for the arrest of accused Ugandan war criminal Joseph Kony went viral, but ultimately drew criticism for irresponsibly advocating international intervention.
In Tripoli's Martyr's Square, Libyans showed their opposition to the calls of some leaders in the oil-producing east for autonomy from central rule.
Rajesh Kumar Singh/AP
Indians throw powder and dance as they celebrate Holi, the Hindu festival of colors, which also heralds the coming of spring.
ERIC FEFERBERG/AFP/Getty Images
A supporter of France's incumbent President Nicolas Sarkozy, who is running for re-election in 2012, wears glasses with national flags during a campaign meeting.
The aurora borealis is seen above snow-covered tundra near Nome, Alaska. A solar storm shook the Earth's magnetic field this week, but spared satellite and power systems as it delivered a glancing blow.
An elderly Afghan man sits next to a covered body, one of the 16 civilian victims killed by a US sergeant's shooting spree in southern Afghanistan.