The warm, moisture-laden air brings heavy rainfall and flash flooding to Peru's northern coast, killing villagers and causing havoc to the fragile soils of the desert and of the arid Andean foothills.

ECONOMIST: The unkind child

So any mechanism that acts to suppress that, i.e. warm cloudy days - or hot air - will also kill them.

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In the open-air cafes on a warm summer's evening, Bulgarians are sipping their own cooling drinks and refreshing cocktails.

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By sucking 55-degree heat out of the ground and concentrating it, the heat pump is able to deliver 110-degree heat into the warm air ducts of a central heating system.

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Firefighters turned on a portable heater to keep her warm in near-freezing temperatures while they dropped an air bag into the opening to slightly spread the walls.

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Meanwhile, the Ohio Valley, Mid-Atlantic and Southeast states should expect unseasonably warm air to linger until late in the week, while it should remain relatively cool in the Northeast and Great Lakes region.

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She was taken by air ambulance to hospital in Southampton after the fall in the warm-up arena.

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Trapped on three sides by high mountains, this warm, moist air forms huge clouds that then discharge electricity in powerful cloud-to-cloud storms.

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One of these changes, which would promote global warming, is a rise in the level of so-called greenhouse gases (particularly carbon dioxide) which trap heat from the sun and thus warm the air.

ECONOMIST: More evidence that global warming is man-made