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A new push to extend U. S. surveillance powers moved fast this week. House leaders got just enough votes to start debating the bill after a tight two-hour vote. The change would let spy agencies keep collecting data without first asking a judge. Some lawmakers only agreed after pressure from top Rep

In the world of emergency medical services, placing ambulances in the right spots and moving them around is a big deal. It's like a game of chess, but with lives on the line. The goal is to make sure help arrives quickly, even when money is tight. This is where some clever math models come in. They