The tragedy of a second runway at Gatwick | Brief letters

Gatwick’s second runway is yet another example of the tragedy of the commons (Gatwick given green light for £2.2bn second runway plan, 21 September). While all nations benefit from a healthy climate, each also benefits from actions which damage the climate. Only international cooperation – including a binding agreement to phase out fossil fuel production – can prevent this tragedy.
Dr Andrew Bodey
Oxford

It would be far more helpful, to the widest possible number of people, if Donald Trump were to disclose what he is taking (Trump attacks Tylenol as officials unveil highly contentious conclusions on autism, 22 September). Then we could all avoid it.
Neil Blackshaw
Alnwick, Northumberland

Is Trump hoping to win a Nobel peace prize or a Nobel prize in physiology or medicine?
Felix Bellaby
Buxton, Derbyshire

An increasing number of charities are severing ties with Sarah Ferguson. Perhaps a case of “pass the duchess on the left hand side” (More charities cut ties with Sarah Ferguson over message to Jeffrey Epstein, 22 September).
Toby Wood
Peterborough

It’s not Your Party, it’s his party, and he’ll cry if he wants to (Corbyn and Sultana: the needs of the left are greater than any of your differences, 22 September).
Tim Barker
Eastington, Gloucestershire

I’m sure I speak for many in wishing Ian and/or Christine Grieve a get well soon and a swift return to bobbing about (Letters, 22 September).
Terry Carbro
Whitby, North Yorkshire