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Physicists have discovered the ultimate speed limit of sound (www.newscientist.com)

Sound travels through solids and liquids via atoms interacting, and now its top speed has been calculated for the first time: it is about 36 kilometres per second

The future of electric cars isn’t Tesla. It’s golf carts. (restofworld.org)

Pride & Shame: The Roots Of US-China Tensions | When Titans Clash | Ep 1/4 | CNA Documentary