How costs evolve over time

$800 million a day. That's the rough monetary estimate of how much the U.S. military operation in Iran is costing taxpayers, according to the Penn Wharton Budget Model — in addition, of course, to the horrible human toll of war. This morning, we'll do the numbers on the costs of military technology and impacts on everyday consumers. Plus, the globe competes for liquefied natural gas, and Meta acquires Moltbook, the social network for AI.