Acoustician Jukka Pätynen stands in an anechoic space, designed so that no surface reflects sound. Hard foam wedges cover the walls to absorb any incident sound; the room itself is a box within a box, with the inner space floating on elastic materials for vibration isolation. “On the decibel scale, 0 dB is the lower limit of human hearing,” says Pätynen. “Our calculations suggest that the actual background noise [in the room] could be as quiet as −10 dB.” (Nature | 2 min read) (Jarkko Mikkonen for Nature)
Under Mission 300, A New Way of Doing Business Connects Over 50 Million
People to Electricity Across Africa
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https://www.worldbank.org/en/news/press-release/2026/06/16/under-mission-300-a-new-way-of-doing-business-connects-over-50-million-people-to-electricity-acros...
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