It takes just one driver to start a ‘phantom jam’. Can you avoid them?

It’s a mysterious yet oh-so familiar phenomenon on the roads. What makes cars grind to a halt for no apparent reason?
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Holiday Baking Disaster? Here’s Why Chocolate Seizes—and What to Do When It Does

A tiny bit of water can ruin melted chocolate, but the right amount can save it. Here is the kitchen science behind seized ...