24 hours in pictures

Port-au-Prince, Haiti: A vendor balances beets on her head at a street market Photograph: Rodrigo Abd/AP

Tirana, Albania: Anti-government protesters have clashed with police who responded with teargas. Several thousand people gathered in the capital after a call from the socialist opposition to protest against the government of Sali Berisha, the prime minister Photograph: Gent Shkullaku/AFP/Getty Images

Athens, Greece: An Afghan asylum seeker holding a child stands in front of riot police during a demonstration outside the Greek parliament. An estimated half a million illegal immigrants and asylum seekers live in the Mediterranean state of about 11 million inhabitants, many of them in Athens, and an increasing share of those trying to reach the EU come in through Greece Photograph: John Kolesidis/REUTERS

Berlin, Germany: A model at Berlin fashion week Photograph: Markus Schreiber/AP

Yichun, China: Newly recruited soldiers brave temperatures of -32C while training north-east of Beijing Photograph: Wang Zhifu/AP

Tucson, United States: Gabrielle Giffords is carried aboard a plane bound for Houston. The congresswoman is beginning the next phase of her recovery from the Arizona shooting on 8 January Photograph: Ho/Reuters

Allahabad, India: Mynah birds fly over a railway station in the early morning Photograph: Rajesh Kumar Singh/AP

Schenectady, US: Barack Obama peers into a hydrogen-cooled generator being manufactured for a power station in Kuwait as he tours a GE plant to talk about clean energy and green jobs Photograph: J. Scott Applewhite/AP

Tunis, Tunisia: A tank guards downtown Tunis as an uneasy peace hangs over the country in the wake of Zine al-Abidine Ben Ali's ouster Photograph: Christopher Furlong/Getty Images

Kiev, Ukraine: Newly wedded couple Sergiy and Irina kiss as they cross the Bridge of Love. Loving couples express their feelings by putting padlocks and ribbons on the railings, as well as painting their names and hearts everywhere Photograph: Efrem Lukatsky/AP

Uttar Pradesh, India: Farmers block railway tracks during a protest in Karchana town against the takeover of their land for two power plants Photograph: Jitendra Prakash/REUTERS

New York, US: Diego Penaloza, 6, of Mexico City, catches snowflakes on his tongue in Times Square Photograph: Mark Lennihan/AP