Roadside barrier that folds like origami blocks traffic noise
17 October 2017
Traffic noise has many frequencies, making it hard to suppress. A new barrier with movable folds can change its acoustic properties in response to traffic patterns
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Gravitational waves have let us see huge neutron stars colliding
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We’ve taken the first pictures of neutron stars colliding 130 million light years away. The resulting gravitational waves may solve some big cosmic mysteries
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