The 85-year-old Pope said that after deep reflection he has come to the certainty that his strengths, "due to an advanced age, are no longer suited to an adequate exercise" of his ministry in today's world.
NASA's latest Earth-observation satellite, the Landsat Data Continuity Mission (LDCM), roared into space on Monday from Vandenberg Air Force Base in California, the US space agency announced.
A child enjoys a ride on an ice trolley in the Winter Palace in Beijing February 11, 2013, the second day of the Chinese Lunar New Year of 2013. China is celebrating a week-long holiday of the Lunar New Year, or Spring Festival, which started from Saturday.
There were no "wardrobe malfunctions" but stars at the 55th Grammy Awards were not covering up either, despite being asked to dress "appropriately."
A reveller of the Salgueiro samba school participates on the first night of the annual carnival parade in Rio de Janeiro's Sambadrome, February 10, 2013.
A snowman is seen in Central Park in New York, February 9, 2013.
Two-year-old Azlo, a Dogue de Bordeux, waits in the lobby for his room to be ready at the Hotel Pennsylvania in advance of the Westminster Dog Show in New York, February 10, 2013.
People pray for good fortune as they hold burning incense on the first day of the Chinese Lunar New Year at Yonghegong Lama Temple in Beijing Feb 10, 2013.
A massive blizzard dumped as much as three feet (one meter) of snow in parts of the Northeastern United States, leaving some 650,000 households and businesses without power and two dead by Saturday.
Chinese leader Xi Jinping has extended festival greetings to construction workers, street cleaners, police and taxi drivers ahead of the Spring Festival, which falls on Sunday this year.
Chinese leaders on Friday extended Lunar New Year greetings to Chinese people both at home and abroad ahead of the traditional Spring Festival.
The Washington Wizards are getting in shape, and the team's rejuvenation may get a further boost from Lunar New Year festivities this weekend.