Hungary’s Attila Szabó was the top scorer for the second year running at the International Physics Olympiad (IPHO). This year’s competition was held 7–15 July in Copenhagen; some 380 high schoolers from 82 countries participated.

The teams from China and South Korea each took home five gold medals. Russia and Singapore each scored four golds and a silver, and the teams from the US, Thailand, and Taiwan won three golds and two silvers each.

On the US team, Calvin Huang and Jeffrey Yan of Palo Alto, California, and Kevin Zhou of Marlboro, New Jersey, earned gold medals; Huang placed first in the experimental part of the competition. Jeffrey Cai of Basking Ridge, New Jersey, and Samuel Zbarsky of Rockville, Maryland, earned silvers. This was the 12th straight competition for which every US competitor won a medal. The US team traveled with coaches Paul Stanley, a physics professor at Beloit College...

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