"When you hear hoofbeats," the old saying goes, "think horse, not zebra."

俗话说：当你听到马蹄声时应该想到的是马而不是斑马。

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Ask not for whom the zebra finch chirps...

BBC: Glasgow scientists say telomeres indicate life length

But before you rush out to get your telomeres stretched - were such a process possible - it is worth pointing out that the creatures they have been working with are not humans but altogether shorter-lived zebra finches.

BBC: Glasgow scientists say telomeres indicate life length

Ms Samson said some of the worst roads did not have official crossings but even the ones with pelican or zebra crossings "could be perilous".

BBC: NEWS | Health | Children pick worst road crossing