HC Deb 25 January 1989 vol 145 c650W
Mr. Bidwell

To ask the Secretary of State for the Environment what research is undertaken by his Department to ascertain the contributions to the greenhouse effect of vehicle exhaust gas emissions.

Mrs. Virginia Bottomley

I refer the hon. Member to the reply that I have today given to the hon. Member for Gordon (Mr. Bruce) which includes information about emissions of CO2, the principal greenhouse gas.