A pack of riders climbs the "Wall of Huy" during the Fleche Wallonne Classic cycling race in Huy April 22, 2015 (Photo: Reuters)
Followers of the Houthi group demonstrate against the Saudi-led air strikes in Sanaa April 22, 2015 (Photo: Reuters)
Bruce Scates (L), grandson of Private Thomas Charles Scates, and Halil Koc, grandson of Turkish veteran Halil Koc, visit the Turkish cemetery ahead of the 100th anniversary of the Battle of Gallipoli, in Gallipoli April 22, 2015 (Photo: Reuteras)
People walk along a Crossrail tunnel that heads off in a north easterly direction towards Stratford from the Stepney Green shaft in east London, Wednesday, April 22, 2015 (Photo: AP)
Bottles of alcohol that were used for indigenous religious ceremonies lay in the snow on La Cumbre, considered sacred ground, on the outskirts of La Paz, Bolivia, Wednesday, April 22, 2015 (Photo: AP)
Russians walk past a statue of Soviet Union founder Vladimir Lenin during celebration of his 145th birthday at the Lenin Hut Museum at Razliv lake, outside St.Petersburg, Russia, Wednesday, April 22, 2015 (Photo: AP)
A group of volunteers gather on a square decorated with a giant world map, during Earth Day celebrations in Lisbon April 22, 2015 (Photo: Reuters)
Indian farmer Moneswar Kathar walks after irrigating his paddy field at Khetri village about 40 kilometers (25 miles) east of Gauhati, India, Wednesday, April 22, 2015 (Photo: AP)
Chile's President Michelle Bachelet (L) and South Korea's President Park Geun-hye walk past an honor guard at the government palace in Santiago April 22, 2015 (Photo: AP)
A farmer is seen hanging from a tree during a rally organized by Aam Aadmi (Common Man) Party (AAP) in New Delhi April 22, 2015 (Photo: Reuters)