Science and technology

Associated Press
A member of Korea Freedom Federation wearing the South Korean soldier uniform, shout slogans as others carry a huge national flag during a ceremony to mark the 63rd anniversary of the outbreak of the Korean War in Seoul, South Korea, Tuesday, June 25, 2013. The three-year Korean War broke out on June 25, 1950, when Soviet tank-led North Koreans invaded South Korea. (AP Photo/Lee Jin-man)

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