Spirit of compromise

Randy Dutton (

) is probably right to say there is a downside to every technical solution proposed for the global-warming problem (hydrogen in the case he raises).

But that is not a reason for not exploring all the avenues open to us to combat global warming (if you accept that it exists, which I know not everybody does).

If you take things to an extreme there is a very easy way to deal with the CO

emissions of cars and lorries, much easier than developing new clean engines. That is to ban cars and lorries; simple, job done and no more emissions.

The same goes for aircraft, ground the lot of them and the emissions go away. In the real world there would be an outcry and the economy would collapse so we won't do it.

Every option we explore is going to have to be some sort of compromise.