Runways, rockets and Russell’s teapot | Brief letters

Stonehenge tunnel | Ants and acid | Lost from the Guardian | Yorkshire pudding | Elon MuskWould it be possible to have a free gamble on which major public work will be completed first: the Stonehenge tunnel or Heathrow’s third runway (First proposals for Stonehenge’s £1.6bn road tunnel revealed, 8 February)?
David Prothero
Harlington, Bedfordshire• Morwenna Ferrier (The faddy eater, G2, 8 February) ascribes the flavour of ants to “the varying levels of ascorbic acid