John Fassman, The Economist's Washington correspondent, dives deep into the controversial deployment of federal troops in American cities and its implications for civil liberties and democracy. He dissects the political motivations behind these actions amidst ongoing protests. The conversation also touches on the fascinating Big Mac Index, which hilariously serves as a cultural and economic barometer. Lastly, Indian scientists unveil a creative solution to local water issues by turning pine needles into biochar, addressing both pollution and forest fire risks.