Again, two ways to do the same thing.

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Actually, these are two different ways of measuring the same thing, so whether a model uses one or the other should make no difference to its predictions.

ECONOMIST: Statistics and climatology

The freedom to act and a stern moral obligation to act in certain ways were seen as two sides of the same American coin.

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But HDR and panoramas are just two ways to splice together images of the same subject, says Marc Levoy of Stanford University, who kickstarted computational photography in a paper he wrote in 1996 with his colleague Pat Hanrahan.

ECONOMIST: Monitor

She began her experiment by taking two populations of the same virus and changing their environments in identical ways.

ECONOMIST: Viral evolution

"It's part of a buddy-system and works both ways, about two years ago we were called on to do the same for them, " he said.

BBC: Communications problem at NI ambulance service resolved

Same-day booking apps differ from browser-based travel sites in two ways: the deals on the apps are all non-refundable and the apps tend to have a limited, ever-changing selection of hotels.

BBC: A boom in same-day hotel booking apps