NOONE seems to know what percentage of global warming is due to manmade activity compared to natural causes such a solar activity and volcanoes.

I doubt that it is even known how much CO2 has been emitted by the volcano in Las Palma for example.

If Britain achieves net zero it will only be two per cent of man made pollution. When natural causes are taken into account it is probably completely negligible, but we need to know.

These are basic questions that need an answer before taking extreme measures.

It needs highly intelligent people to decide what measures to take.

It worries me that people who think electric cars are pollution-free, that narrowing and closing roads will reduce pollution and smart motorways are safe will be the ones making them next week.

Chris Gould

Georgia Avenue, Worthing