Dr Peter Hawker, chairman of the British Medical Association's consultants committee, said they created "a pressure cooker atmosphere" in hospitals.

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Remember the pressure, each atmosphere they halve and halve again.

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Such verbal exchanges add to the pressure-cooker atmosphere in the region, where North Korea's bellicose rhetoric over threatened nuclear attacks has kept the country's neighbors and the U.S. on their toes in recent weeks.

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The pressure and heat produced, greater than 100 million degrees and 100 billion times the pressure of the Earth's atmosphere, cause fusion.

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My 1979 dissertation was a model relating interannual and interseasonal variations in the shape of the atmosphere, as reflected by the surface barometric pressure field, to variations crop yields across the United States.

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It measures the pressure differential between two adjacent horizontal bands in the atmosphere.

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The daily cycle of higher pressure in the morning and lower pressure in the evening results from daytime heating of the atmosphere by the sun.

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Using a powerful supercomputer, weather forecasters divide the atmosphere up into an elaborate three-dimensional grid, assign initial values of pressure, wind-speed, humidity and so on, and then apply the laws of physics to see what happens next.

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