24 hours in pictures

London, UK: A man feed sea gulls in St James Park. A National Trust survey suggests that across England, Wales and Northern Ireland, one-in-eight don't have access to enough green spaces Photograph: Jeff J Mitchell/Getty

Pittsburgh, USA: Presidential candidate Barack Obama is protected by the Secret Service as he shakes hands with people at a rally at the Mellon Arena Photograph: Alex Brandon/AP

Kibati, Congo: A Congolese boy cooks in an improvised Internally Displaced Camp north of the provincial capital of Goma Photograph: Walter Astrada/AFP

Kathmandu, Nepal: Hindu devotees place flowers and offerings on the foot of a cow as a symbol of worship. Nepalese people are celebrating the five-day-long Tihar festival during which they worship the cow on the third day Photograph: Deepa Shrestha/Reuters

Havana, Cuba: The Perolo Suarez family are seen reflected in a mirror at their house in the 10 de Octubre neighborhood Photograph: Ramon Espinosa/AP

Allahabad, India: A boy lights candles in the formation of a cricket pitch on the eve of Diwali, the festival of lights Photograph: Jitendra Prakash/Reuters

Beijing, China: A nurse walks past a clock as she makes her afternoon checks on patients in a HIV/AIDS ward in Youan hospital Photograph: David Gray/Reuters

Hubei, China: A cat plays with a mouse in a garden in Wuhan Photograph: Reuters

Sao Paulo, Brazil: A visitor uses the interactive media at a football museum. Much of the museum is interactive, with technology chronicling legendary moments of Brazilian football Photograph: Paulo Whitaker /Reuters

Sculeni, Romania: A car with infrared equipment at a Frontex checkpoint on the border between Romania and Moldova Photograph: Bogdan Cristel/Reuters

Baghdad, Iraq: Medics care for a man wounded in a car bomb explosion in the Bab al-Sharji area of central Baghdad Photograph: Karim Kadim/AP

Brooklyn, USA: A woman and her dog run through an early morning mist in Prospect Park in New York Photograph: Peter Morgan/AP