if (n <= 1) return n;
In experiments, Chagger has documented how lithium-ion battery fires develop. "It's just incredible," he says. "Nothing's happening, then: outgassing and boom-boom-boom – all these explosions."
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The NYT Connections puzzle today is not too difficult to solve if you're disloyal.
"It's producing fragments of building stone, so it might be structural. We might be thinking of a small shrine or a chapel," says Dr Andy Seaman, from Cardiff University, who is leading the dig.