In the 1970s, the USSR built the Duga Radar—so powerful it disrupted U.S.

In the 1970s, the USSR built the Duga Radar—so powerful it disrupted U.S. radio stations thousands of km away. Nicknamed the “Russian Woodpecker” for its eerie clicking sound across global frequencies, is located within the Chernobyl Exclusion Zone.Science and facts💡