25 Nisan 2013 Perşembe Gününden Fotoğraflar

U.S. First Lady Michelle Obama (L) poses with former first ladies (2nd L-R) Laura Bush, Hillary Clinton, Barbara Bush and Rosalynn Carter as they attend the dedication ceremony for the George W. Bush Presidential Center in Dallas, Texas.

5 U.S. First Lady Michelle Obama (L) poses with former first ladies (2nd L-R) Laura Bush, Hillary Clinton, Barbara Bush and Rosalynn Carter as they attend the dedication ceremony for the George W. Bush Presidential Center in Dallas, Texas.

A breeder, whose business has been affected by the H7N9 bird flu virus, walks his ducks along a road in Changzhou county, Shandong province, China, Apr. 24, 2013.

6 A breeder, whose business has been affected by the H7N9 bird flu virus, walks his ducks along a road in Changzhou county, Shandong province, China, Apr. 24, 2013.

South Korean Marine Corps take part in a practice for a U.S.-South Korea joint landing operation drill in Pohang, about 370 km (230 miles) southeast of Seoul.

7 South Korean Marine Corps take part in a practice for a U.S.-South Korea joint landing operation drill in Pohang, about 370 km (230 miles) southeast of Seoul.

"Robotic Jellyfish Drone" is on display at the exhibition "En Vie, aux frontieres du design" at the EDF Foundation in Paris, France. The drone, part of the project "Post Natural History", is used in the agricultural sector.

8 "Robotic Jellyfish Drone" is on display at the exhibition "En Vie, aux frontieres du design" at the EDF Foundation in Paris, France. The drone, part of the project "Post Natural History", is used in the agricultural sector.