Climate extremes – from bushfires to a polar vortex

February is the one month of the year when the climate extremes of the northern and southern hemisphere starkly remind us of the threat to civilisation posed by climate change. In the northern hemisphere, a polar vortex in January and February brought record low sub-zero temperatures to the UK, Europe, USA and Canada. Cars disappeared beneath mounds of snow; Chicago‚Äôs river froze as temperatures dropped to a rare -46 degrees Celcius (wind chill temperature). The…

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