2026-05-17 – News – www.theguardian.com
The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts
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This week’s question: You’re supposed to be quiet in the cinema. So why are the snacks so loud?
I was recently beset by a plague of clothes moths. After hours of research, I discovered the miracle that is the parasitic wasp, or Trichogramma evanescens – near-microscopic beasts that you can order online (in sachets of 2,000 wasps!), the life’s calling of which is to destroy clothes moth eggs.
It made me wonder: is there anything else in our daily lives that is so beneficial to us, but which few of us have heard of – or realise is there? John Forward, Brixton
