[freeflight]

> May be decades before we find out.

You mean just like in the US?

[H8crilA]

Yup. I mean London was covered in smog, just like Beijing is now. Not a big leap to expect a replay to some degree.

[mc32]

Except now we know the consequences and have the experience and moreover have alternatives (even in simple management, mitigation terms) which might not existed five decades ago.