See Margaret Atwood’s answer. I saw the short version of this interview on @Channel4 last night; a delight to have my daughter bring this longer podcast to my attention. Atwood’s solution for the world? Listen on the link.
Children plant trees in Ireland (€10 sponsors one native or nativised tree) with https://crann.ie/support-cranns-work-with-a-donation/ ,
and our partner organisations (€1 sponsors one tree in fast-growing tropical regions)