24 hours in pictures

Canberra, Australia: A hot air balloon shaped like Darth Vader's head comes into land after a sunrise flight. More than 50 balloons will lift off from the centre of Australia's capital every morning until 17 March during the annual balloon festival, which this year coincides with the city's centenary celebrations. Photograph: Daniel Munoz/Reuters

New York, USA: Snow gathers on gravestones at the Trinity church. Photograph: Lucas Jackson/Reuters

Sabaneta, Venezuela: A poster with an image of Venezuela's late president Hugo Chávez hangs over the handlebars of a bicycle in the main square of Chávez's hometown. Photograph: Esteban Felix/AP

London, England: Artist Peter Fischli poses next to Rock on Top of Another Rock, in Hyde Park. The piece, commissioned by the Serpentine Gallery, was created by the artistic duo Fischli/Weiss, and was one of the last works they jointly conceived before David Weiss's death last year. Photograph: Matthew Lloyd/Getty Images

Bhubaneswar, India: A man throws water onto a fire that broke out in a slum area. Hundreds of huts were destroyed in the fire and 20 people were injured. Photograph: Reuters

São Paulo, Brazil: An activist watches people protesting against violence towards women during celebrations of International Women's Day. Photograph: Yasuyoshi Chiba/AFP/Getty Images

Mogadishu, Somalia: Hundreds of camels wait at the port to be exported to Saudi Arabia. Photograph: Mohamed Abdiwahab/AFP/Getty Images

Manama, Bahrain: A medic treats a protester wounded by a pellet gun during clashes with riot police following an anti-regime demonstration against the death of Mahmud al-Jaziri in the village of Daih. Photograph: Mohammed Al-shaikh/AFP/Getty Images

Melbourne, Australia: Fake tan is applied to bodybuilders before the IFBB Australia Pro Grand Prix at the Plenary. Photograph: Robert Cianflone/Getty Images

Rio de Janeiro, Brazil: Nair Romana, 18, feeds her 20-day-old son, Kaua, at her home in the Santa Marta slum. Photograph: Pilar Olivares/Reuters

Bhopal, India: Children dressed as the Hindu god Shiva take part in a fancy dress show on the eve of the Maha Shivaratri festival, which is celebrated with great devotion by Hindus with prayers and ritual bathing of Shivalingams Photograph: Sanjeev Gupta/EPA

Cairo, Egypt: Supporters of al-Ahly football club celebrate after an Egyptian court confirmed the death sentence for 21 people for their role in fatal football riots in Port Said last year. Photograph: Khaled Elfiqi/EPA

Vatican City, Rome: The Vatican installed a special chimney on the Sistine Chapel from which white smoke will signal the election of a new pope as cardinals prepare for the vote next week after Benedict XVI's resignation. If black smoke appears from the chimney, it will indicate that the cardinals were unable to reach a decision. Photograph: Filippo Monteforte/AFP/Getty Images

Nairobi, Kenya: Supporters of the prime minister, Raila Odinga, look out from the balconies of a building in the Mathare slum Photograph: Goran Tomasevic/Reuters