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Getting used to it

Getting used to it I grew up in Perth, Western Australia, where summer days are often in the high 30°Cs. I found this warm, but not too hot. But after a year living in the UK, I was wearing shorts when it was just 21°C. Obviously, I had acclimatised to the local weather. Is this a psychological or physiological process? Do any changes occur in the body?

Ross Stephen-Forbes, Broome, Western Australia

Cold Feat

Why is a freezer door difficult to reopen just after you shut it?

Felix Ansell, Haworth, West Yorkshire, UK

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