💻 **The Download: turning down human noise, and LA’s stunning subway upgrade**

This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. The noise we make is hurting animals. Can we learn to shut up? As human society has expanded, animals have started struggling to hear one anot...

🔗 https://www.technologyreview.com/2026/04/21/1136246/the-download-human-noise-la-subway-upgrade/

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