May May 1–October 31 – Expo 2015 is held in Milan, Italy. May 7 – The 2015 UK General Election results in the first Conservative majority government in 18 years. May 8 – A prison break occurred in the Iraqi town of Al Khalis, resulting in over fifty escapees. May 10 – The first round of the 2015 Polish presidential election is held. May 11–12 – Version O of Les Femmes d'Alger by Pablo Picasso sells for US$179.3 million at Christie's auction in New York, while the sculpture L'Homme au doigt by Alberto Giacometti sells for US$141.3 million, setting a new world record for a painting and for a sculpture, respectively. May 12 – A second major earthquake in Nepal, measuring 7.3 on the moment magnitude scale, results in 153 deaths in Nepal, 62 in India, 1 in China and 2 in Bangladesh, with a total of 218 deaths. May 19–23 – The Eurovision Song Contest 2015 is held in Vienna, Austria, and is won by Swedish entrant Måns Zelmerlöw with the song "Heroes". May 21 – ISIS captures the ancient city of Palmyra in Syria. May 24 – The second round of the 2015 Polish presidential election is held, with Andrzej Duda reigning victorious over then-incumbent president Bronisław Komorowski. May 29 – In Tonga, the Mata ʻo e Laʻa Solar Facility is officially opened by King Tupou VI.
may may 1–october 31 – expo 2015 is held in milan italy may 7 – the 2015 uk general election results in the first conservative majority government in 18 years may 8 – a prison break occurred in the iraqi town of al khalis resulting in over fifty escapees may 10 – the first round of the 2015 polish presidential election is held may 11–12 – version o of les femmes d'alger by pablo picasso sells for us$1793 million at christie's auction in new york while the sculpture l'homme au doigt by alberto giacometti sells for us$1413 million setting a new world record for a painting and for a sculpture respectively may 12 – a second major earthquake in nepal measuring 73 on the moment magnitude scale results in 153 deaths in nepal 62 in india 1 in china and 2 in bangladesh with a total of 218 deaths may 19–23 – the eurovision song contest 2015 is held in vienna austria and is won by swedish entrant måns zelmerlöw with the song "heroes" may 21 – isis captures the ancient city of palmyra in syria may 24 – the second round of the 2015 polish presidential election is held with andrzej duda reigning victorious over then-incumbent president bronisław komorowski may 29 – in tonga the mata ʻo e laʻa solar facility is officially opened by king tupou vi