This mental calculation looms more largely in an owner's mind as a dog gets older, and thoughts turn to how long the pet has left.

BBC: Dog years: How do you calculate a dog's true age?

That means the majority of the leads were being created within the first three days of launch, regardless of how long the campaign was left in the market (this is not uncommon).

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We worry how long the ice caps have left because of climate change.

BBC: Last Updated: Thursday May 08 2008 11:40 GMT

For that reason, too, people are asking: how long does Arben Xhaferi still have left in politics?

ECONOMIST: Charlemagne

She did not have specifics Monday night on how long he was employed, when he left or whether he was fired or left voluntarily.

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It remains to be seen how long Heras will keep up with Armstrong et al but expect crowds to be left in awe by his climbing ability - he could yet be crowned king of the mountains - and will surely bring a stage victory on one of the tougher stages this time around.

BBC: SPORT | Other Sport... | Cycling | Roberto Heras

Yet the policy has left many questions unanswered, such as what these energy prices will be, how long contracts will last and how much energy will be needed.

ECONOMIST: Energy capacity