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"It's probably the only festival that's dependent on air pressure, which dictates how far the tide goes out and how long we can stay on the sandbar," he said.

As air pressure in the chamber decreased, the air inside the teacakes expanded until the chocolate cracked and the mallow filling puffed out.

And in the Pacific north-west , communities are still recovering after last week's bomb cyclone, an intense weather event that takes place when air pressure quickly drops off the coast.

The "bomb cyclone" - as forecasters call it - is caused by air pressure quickly dropping off the coast, which has rapidly intensified the weather system.

Simulations with a computer model suggest that the singers can, among others, only produce their highest frequencies with a greatly increased tension in the vocal folds, supported by high expiratory air pressures.