plainpicture/Sally Mundy
If plants and trees can communicate via their root system, do they get lonely in pots?
Jim Turton, Bristol, UK
izusek/Getty Images
Why do older people groan or say “ohoo” when we sit down, stand up or do pretty much any one-shot physical action? Is it a cultural convention or is there a physiological reason?
Adrian Bowyer, Foxham, Wiltshire, UK
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