vegas zipwire
People try out the new 850ft-long SlotZilla Zipline at the Fremont Street Experience in Las Vegas, Nevada
extreme bike
A competitor performs an extreme motocross jump over the Shanghai skyline to kick off the Kia World Extreme Games
climbing wall
A competitor trains for the Climbing Wall competition during the World Extreme Games in Shanghai
cctv cat
A giant billboard of a cat is seen behind a CCTV camera in London
upside down house
A tourist jumps inside an upside-down house at Fengjing Ancient Town, Jinshan District, south of Shanghai
Morris men
Morris Men dance on May Day at Bradgate Park in Newtown Linford, Leicestershire
A man wearing devil make-up looks out of a railway carriage as he travels through Germany's Harz mountains to celebrate the Walpurgisnacht pagan festival
may day
Protesters shield themselves from police water cannon during a May Day demonstration in Istanbul
Ukraine fight
Members of Ukraine's State Security Administration (R) clash with members of the Euromaidan movement's self-defence units during a rally outside the cabinet of ministers building in Kiev
syria weapon
Rebel fighters prepare to launch an anti-tank missile towards forces loyal to Syria's President Bashar al-Assad in Maaret al-Naaman village, in Idlib
tornado fire
Michael Stanek hugs his daughter Kennedy Stanek as they take a break from helping friends sift though the rubble of their tornado-destroyed homes in Vilonia, Arkansas
tornado kitchen
Marla Jackson salvages what she can from the area that was the kitchen in her parents' home after it was destroyed by a tornado in Louisville, Mississippi
tornado wreckage
Jerryco Green climbs over a collapsed structure as he looks for items in Tupelo, Mississippi after a tornado hit the town
Damage due to flash flooding is seen along Johnson Avenue in Pensacola, Florida, US
Fireworks explode around the medieval Fort St Angelo in Valletta's Grand Harbour, as Malta celebrates the 10th anniversary of its accession to the European Union
qatar airport
Passengers walk through a terminal upon their arrival at the new Hamad International Airport in Doha, Qatar
pope skullcap
A gust of wind blows off Pope Francis' cap during his weekly general audience at St Peter's Square at the Vatican
Goalkeeper Cassio Ramos of the Corinthians football club holds a replica of the helmet worn by late Brazilian Formula One driver Ayrton Senna before the start of their Copa do Brasil match against Nacional AM in Manaus, on the eve of the 20th anniversary of his death during an F1 race in Imola, Italy
south sudan kids
South Sudanese children displaced by recent fighting pose for a photograph at a camp for the internally displaced in Bor town, Jonglei state