If a moving ball runs into another, stationary one head-on, it can come to a dead halt.

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Since they are better than anything else at bringing free radicals to a dead halt, fullerenes can elucidate precisely the roles the radicals play and why, like radicals everywhere, they make so much go wrong.

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And it's also where Spector's answers briefly come to a dead halt, with his attorney advising him to stay mum about what happened from the time he met Clarkson until Shapiro arrived at the Alhambra police station.

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Always dead or else weak and sleepy, crawling off to a permanent halt behind the chest of drawers.

NEWYORKER: Wasps