A rainbow arches over Hefer Valley, Israel. (AP Photo/Ariel Schalit).
- The Sun Sets as a Pakistani Vendor Heads Home Carrying his Unsold Balloons, in Lahore, Pakistan. (AP Photo/K.M. Chaudary).
- Visitors take a selfie as they walk through azalea blossoms at Nezu Shrine during a day of mild spring weather in Tokyo. (AP Photo/Eugene Hoshiko).
- Women offer prayers at Fukutoku shrine, in Tokyo's Nihombashi district. The shrine, which is dedicated to enshrine the god of grain productiveness, is located in a Tokyo's business and shopping center. (AP Photo/Shizuo Kambayashi).
- A man offers prayers at Fukutoku shrine in Tokyo's Nihombashi district. (AP Photo/Shizuo Kambayashi).
- Filipino Children Walk Under The Shade of Trees at the Business District of Makati, South of Manila, Philippines. (AP Photo/Aaron Favila).
- A clown dances during a march in downtown Guatemala City. Professional clowns celebrated the second anniversary of their association and requested that April 13 be recognized as the National Day of Clowning. (AP Photo/Moises Castillo).
- Palestinian children play football on the beach during a rainy day in Gaza City. (AP Photo/ Khalil Hamra).
- Cosmologist Stephen Hawking, left, joined by a group of scientists including Princeton physicist Freeman Dyson, right, announce the new Breakthrough Initiative focusing on space exploration and the search for life in the universe, during a press conference, Tuesday, April 12, 2016 at One World Observatory in New York. The $100 million project is aimed at establishing the feasibility of sending a swarm of tiny spacecraft, each weighing far less than an ounce, to the Alpha Centauri star system. (AP Photo/Bebeto Matthews).
- Visitors browse vendor wares for gardening and landscaping at the 2015 Cincinnati Flower Show in downtown Cincinnati. (AP Photo/John Minchillo).