Under the proposed legislation European gas companies would be required to ensure supplies to householders in cases of extreme temperatures during a seven-day peak period, or during any period of at least 30 days of exceptionally high demand.

BBC: MEPs pass law to protect European gas supplies

Essentially, he says that a dramatic temperature peak will be reached in years measured in high tens to low hundreds, and that the cooling period following will take anywhere from 100, 000 to 500, 000 years, depending on what we humans do right now and in the next decade about carbon emissions.

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