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PBS News Hour

Online "Hacker" Group Crowdsources Radiation Data for...

Tonight on the NewsHour, science correspondent Miles O'Brien reports on a grassroots group called Safecast that is crowdsourcing data on radiation contamination from locations around Japan. While in Tokyo, he spoke to Hari about his conversations with Safecast workers, Japanese officials and Japanese residents eager for more information about the consequences of the nuclear accident.
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October 21, 2025 - PBS News Hour full episode
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Season 2025 Episode 294
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