

A Tunisian protester surrounded by barbed wire chants slogans by a police barricade near government offices in the Kasbah, the old city of Tunis, Tunisia. Police blocked several roads after a day of violent clashes Wednesday between demonstrators and security forces who fired tear gas and left several people injured. Zohra Bensemra/Reuters
A farmer on a tractor makes his way through a foggy winter landscape near Rosenheim, southern Germany. Matthias Schrader/AP
A bald eagle peers through the frost-covered branches of a tree along the Kansas River near Lecompton, Kan. Orlin Wagner/AP
A Yemeni demonstrator (c.) shouts slogans during a rally calling for an end to the government of President Ali Abdullah Saleh, in Sanaa, Yemen. Tens of thousands of people are calling for the president's ouster in protests across the capital inspired by the popular revolt in Tunisia. Hani Mohammed/AP
Ash and rocks fell across a wide swath of southern Japan as Shinmoedake peak on Mount Kirishima erupted between Miyazaki and Kagoshima prefectures. Authorities raised alert levels and called for an evacuation of all residents within a 1.2 mile radius of the volcano. Kyodo/Reuters
A man rides his horse-pulled cart past the Thomson Dream cruise ship moored in Havana Port Wednesday. The ship carries up to 1,800 passengers on its Caribbean route which starts in Cozumel and stops in Cuba, the Dominican Republic, Barbados, Curacao, Aruba, and Santa Marta. Desmond Boylan/Reuters
Fans of Peru's Alianza Lima cheer for their team Wednesday prior to the start of their match against Mexico's Jaguares de Chiapas at the Libertadores Cup soccer tournament in Lima, Peru. Mariana Bazo/Reuters
Peter Yu shovels snow from his driveway in Somerville, Mass., where a foot of fresh snow fell on top of piles left from two recent storms. Josh Reynolds/AP
A flower vendor sets up for the day as two Muslim boys walk past in Bangalore, India. The whale mural is part of the city's beautification drive. Aijaz Rahi/AP
Soldiers from the Third Iraqi Army Division stand in formation during the Iraqi national anthem at a ceremony marking their graduation from a 25-day maneuver course at the US-run al-Ghuzlani Warrior Training Center in Mosul, Iraq. The graduation comes 12 days after the death of two US soldiers at the training center, when an Iraqi soldier opened fire during an exercise. Maya Alleruzzo/AP
A 2-week-old Little Penguin rests against a stuffed animal in an incubator at the Cincinnati Zoo. The chick weighs about a quarter of a pound but is expected to weigh just over two pounds as an adult. Little Penguins are found along the coastlines of southern Australia and New Zealand. The Cincinnati Zoo is home to one of only four Little Penguin colonies in the US and has successfully hatched 22 Little Penguin chicks to date. Al Behrman/AP
A man is evacuated by a Saudi civil defense helicopter after heavy rainfall in Jeddah. Torrential rainfall submerged streets and cut off electricity in parts of Saudi Arabia's second largest city on Wednesday. Saudi Press Agency/Reuters
Firefighters remove their shirts as they attend a routine physical training session in a snow-covered square in Changchun, Jilin Province, China. Local firefighting departments conduct the training twice a week, aiming to enhance the firefighters' capabilities in hostile weather. China Daily/Reuters
Shadows of participants of the World Economic Forum (WEF) are seen on a wall in Davos, Switzerland. World leaders warned on Thursday that soaring food prices risked stoking unrest and even war, but top executives meeting in the Swiss resort of Davos rejected calls for curbs on commodity speculation. Christian Hartmann/Reuters
Gober, an elderly female Sumatran orangutan who is blind in both eyes due to cataracts, lies down with her twin babies at a rehabilitation center in Sibolangit, North Sumatra, Indonesia. The twins were born on Jan. 21, from two blind parents. Binsar Bakkara/AP
Safta Marin, a Romanian Roma who survived World War II deportations, watches an event at the Holocaust Memorial in Bucharest, Romania. About 11,000 Romanian Gypsies perished during the deportations in the Dniestr region 65 years ago, according to the International Committee for the Study of the Holocaust, a panel of historians. Vadim Ghirda/AP
Polo players Jonny Good from Team Great Britain (c.) and, from left, Augustin Martinez, Bautista Ortiz de Urbina, and Federice Bachmann from Team Switzerland, fight for the ball during the St. Moritz Polo World Cup on Snow on the frozen lake in St. Moritz, Switzerland. Arno Balzarini/Keystone/AP
A young boy peers through a steel fence displaying get-well messages for former South African President Nelson Mandela at a school adjacent to the Milpark Hospital in Johannesburg, South Africa. The elderly Mandela, fondly known as Madiba, is said to be undergoing routine medical tests at the hospital. Themba Hadebe/AP
A model displays jewelry created by Pakistani designer Shafaq Habeeb during the four-day Islamabad Fashion Week, in Islamabad, Pakistan. Muhammed Muheisen/AP
Visitors walk past a rose at the main entrance to the Nazi concentration camp at Buchenwald during Holocaust Memorial Day in Germany. More than 250,000 people were held captive in the camp between 1937 and 1945; more than 50,000 died there during that time. On Jan. 27, 1945, the Soviet Army liberated the largest Nazi death camp at Auschwitz-Birkenau, Poland, where more than 1 million prisoners were killed. Jens Meyer/AP