The massive stone bluffs they built in acted as thermal reservoirs to heat in the winter and cool in the summer.
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It is hot in here, the air-conditioning not yet on, the heat remembering winter.
For one thing, cubicle jobs usually mean you don't have to spend your day outside fighting the summer heat or winter chill.
In the letters that they wrote home they spoke of the horrors of war and the bravery it summoned -- how they endured the slaughter of the trenches and the chaos of beach landings, the bitter cold of a Korean winter or the endless heat of a Vietnam jungle.
Imagine the heat in the summer, the bitter cold in the winter, and Mandela going out to quarry stone, the burning white light reflecting off the limestone permanently and deeply injuring his sight.
Home insulation, often referred to as cavity insulation, is a cast iron money saver during the winter months because it regulates the flow of heat from a warm area to a cold one.
Power failures in the midst of heat waves or winter storms can literally be lethal.
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It will be killed beyond reasonable hope of resurrection not by heat but by the encroaching cold of winter.
Young and old, men and women worked from sun up to sun down, through the summer heat and bitterly cold winter.
California ships extra power north in the winter to provide more heat.
The top-end models have about 265 miles of range, reduced in the winter due to slightly lower battery performance but mostly the need to heat the car.
In the winter, you are moving heat from the outside of the house to the inside.
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Heat generated by occupants and computer equipment is caught by heat retention coils to keep the building warm during the winter months.
Among the energy-saving options, two promising technology switches are the electrification of transportation (electric vehicles can be about four times as energy-efficient as standard fossil-fuel vehicles) and the use of electric-powered heat pumps to deliver winter heating and hot water (heat pumps can be four times as energy-efficient as standard heaters).
The country also has experienced increased shortages of natural gas, which were felt acutely during the winter because many people rely on natural gas to heat their homes as well as cook.
For we rather like being able to drive places, cook food, heat water and survive a Mid-West winter without having to melt the ice on the pitcher each morning.
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Chile, now in the middle of its winter season, is still seeing its economy heat up.
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But shadow energy secretary Caroline Flint insisted the government's "warm words" wouldn't "heat homes during a bitter winter".
And in the winter, the rising price of oil is also making it more expensive to heat your homes.
Mr Winter said he had taken the decision not to seek re-election to "take the heat out" of the situation.
The waste heat is converted into cooling capacity, and the small heat surplus is dumped into aquifers 300 m below ground level, where it is stored and recovered in winter.
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