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hydrogen bomb

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U.S. Secretary of State Rex Tillerson departs after a closed classified briefing for members of the Senate on North Korea and Afghanistan on Capitol Hill in Washington

World Oct 01

Tillerson says U.S. has direct channels to talk to North Korea

By Christopher Bodeeen and Matthew Pennington, Associated Press

Science Sep 30

150-megaton thermonuclear explosion, Bikini Atoll, 1 March 1954.The unexpected spread of fallout from the test led to awareness of, and research into, radioactive pollution. Courtesy UNO. Photo by Ann Ronan Pictures/Print Collector/Getty Images
What a North Korea hydrogen bomb would do to the Pacific Ocean and space stations

Here’s a closer look at what a hydrogen bomb could mean for sea creatures, fisheries, astronauts and even Google Earth.

By Nsikan Akpan

World Jan 06

Watch 3:18
North Korea’s claim of H-bomb spurs wave of condemnation, skepticism

North Korea declared on state television that it had made its first test of a hydrogen bomb. The announcement was condemned around the world, including by China, an ally of the North. Meanwhile, the U.S. and South Korea expressed skepticism…

By PBS News Hour

World Jan 06

Watch 8:42
How should the world respond to North Korea’s bombshell claim?

Gwen Ifill talks with former Obama administration official Wendy Sherman and Siegfried Hecker, former director of the Los Alamos National Laboratory, about why we should be worried about North Korea’s purported test of a hydrogen bomb, how world powers should…

By PBS News Hour

World Jan 06

North Korea claims successful hydrogen bomb test, but nuclear experts are skeptical

Hours after South Korea officials detected an "artificial earthquake" Wednesday, North Korea said it successfully tested a "miniaturized" hydrogen bomb.

By Joshua Barajas

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Full Episode
Friday, Sep 5
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