A man sells traditional doll toys and sweets for children to celebrate the birthday of prophet Muhammad, also known as “mawlid al nabi”, which will fall next week, in a makeshift tent in Cairo, December 30, 2014. (Photo by Mohamed Abd El Ghany/Reuters)

Rescue workers help the injured at the site of a multi-storey building collapse in the capital Nairobi, Kenya Sunday, January 4, 2015. The residential building in the Huruma neighborhood of Nairobi collapsed on Sunday and according to the Kenya Red Cross, a dozen people have so far been rescued but an unknown number are still feared trapped. (Photo by AP Photo)

The “Hoegh Osaka” ro-ro cargo ship, operated by Hoegh Autoliners AS, sits grounded on Bramble Bank in the Solent near Cowes, on the Isle of Wight, U.K., on Monday, January 5, 2015. The car transporter was deliberately grounded after developing a list, shortly after it left the Port of Southampton. (Photo by Simon Dawson/Bloomberg)

Rotterdam based SMIT and Livorno based NERI salvage workers start their work of diesel recovery on a pontoon from the the cruise ship Costa Concordia that lies stricken off the shore of the island of Giglio on January 24, 2012 in Giglio Porto, Italy. (Photo by Laura Lezza/Getty Images)

A merino lamb attempts to jump out of its enclosure to find its mother shortly before feeding time at the Educational and Reserach Station for Animal Breeding (Lehr- und Versuchsanstalt fuer Tierzucht und Tierhaltung, or LVAT) in Brandenburg state on January 27, 2012 in Gross Kreutz, Germany. Hundreds of lambs have been born at the LVAT in recent weeks in the midst of the station's lambing season. Many of the lambs will be sold just before Easter, when they will have grown to a weight of over 40kg, as lamb is the traditional German Easter meal. (Photo by Sean Gallup/Getty Images)

Russian oppostion activists take part in a rally and march to Bolotnaya Square on February 4, 2012 in Moscow, Russia. Demonstrators braved temperatures as low as -20 degrees celsius as they took to the streets exactly one month before the presidential elections in protest against Vladimir Putin's efforts to return to the Kremlin for an unprecedented third term as President. (Photo by: Ilya Varlamov; Source: LiveJournal)

Stefan Libon proposes to girlfirend Jess McGarrity in front of a banner message “Marry Me Jess?” on the deck of the Queen Mary 2, at Mrs Macquarie's Chair on Valentines day, February 14, 2012 in Sydney, Australia. (Photo by James Morgan/Carnival Australia via Getty Images)

Chinese artist Song Dong stands in his installation entitled “Waste Not” in The Curve at the Barbican Art Gallery on February 14, 2012 in London, England. Waste Not comprises over 10,000 objects collected by Song Dong's mother over a period of 5 decades. The installation is Song Dong's first major solo exhibition in the UK and opens to the general public on February 15, 2012. (Photo by Oli Scarff/Getty Images)