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
What is the evolutionary purpose of blushing? Peter Walls, Liverpool
Send new questions to nq@theguardian.com.
More Stories
Elon Musk’s company town: SpaceX employees vote to create ‘Starbase’
Scientists record seismic tremors from title-clinching Liverpool win over Spurs
‘Hi mum!’ The simple WhatsApp text scam costing parents and friends dear