"Unveiling Ancient Anarchists, Filthy Tycoons, and a Revolutionary State of Matter"

This week's Phys.org highlights include the discovery of an ancient water management system in China built without centralized authority, the detection of a hidden phase of matter that separates supercooled liquids from normal liquids, the New Horizons spacecraft measuring the darkness of the universe, extreme coral reef bleaching off southeast Florida due to rising ocean temperatures, and a study showing that the top 10% of wealth holders in the US are responsible for 40% of carbon emissions, suggesting that the tax code could be used to address climate change.