24 hours in pictures: August 16 2007

Baghdad, Iraq: US troops patrol the streets of a Sunni neighbourhood that has been used as a base for insurgents Photograph: Spencer Platt/Getty

Warsaw, Poland: Over 1,000 soldiers and various millitary vehicles parade in the centre of Warsaw Photograph: Tomasz Gzell/EPA

Des Moines, US: Hillary Clinton cooks with former Iowa governor Tom Vilsack and his wife, Christie, at the Iowa state fair Photograph: Scott Olson/Getty

The star Mira. Scientists have discovered a supersonic star which is forming a wake 13 light-years long Photograph: NASA/JPL-Caltech/PA

London, England: A plane comes in to land at Heathrow airport Photograph: Graeme Robertson/guardian.co.uk

Bangalore, India: A hawker sells flags at a traffic junction Photograph: Manjunath Kiran/EPA

Fenghuang County, China: Rescue workers prepare to drill holes for explosives in order to break a collapsed bridge to help in the search for bodies Photograph: EyePress/AP

Sao Paulo, Brazil: Stock traders negotiate during the morning session at the Mercantile & Futures Exchange Photograph: Mauricio Lima/AFP

Athens, Greece: A fire engine burns near a wildfire on Penteli mountain Photograph: Orestis Panagiotou/EPA

Memphis, US: Elvis Presley impersonator Rodney Hamrick from Alabama puts on his jewellery as he prepares to perform during the Images of the King competition Photograph: Joe Raedle/Getty

Hanuabada village, Papua New Guinea: A Motuan couple enjoys the sea breeze by the glassless windows used throughout their traditional stilt houses Photograph: Torsten Blackwood/AFP

Cologne, Germany: Chinese stripe-necked turtles swim in a basin at the zoo Photograph: Henning Kaiser/AFP

Riehen, Switzerland: Oiseau Lunaire by Joan Miro on display at the Foundation Beyeler Photograph: Georgios Kefalas/EPA

Colombo, Sri Lanka: People choose from a heap of used bicycles imported and displayed at a site in Kurunegala. Bicycles, once considered the poor man's mode of transport, are at a premium now Photograph: Pushpa Kumara/EPA

Edinburgh, Scotland: Actors from The Angel and the Woodcutter promote their Edinburgh Fringe Festival show on the Royal Mile Photograph: Danny Lawson/PA