May I suggest that we all stop breathing for 30 seconds each hour whilst we own an rx, to compensate for the extra we emit whilst driving.
Also when an environ "mentallist" tells you we re heating up the earth, remind him that 700,000 years ago the sea level was 120m lower and that the UK was under 2km of ice.
Even you re hardened enviro"mentallist" may have to switch on his 3kw fan heater if such conditions return.
and while im ranting ... also tell him that when all the oils been burned up (in 60 years time apparently), we wont be able to emit any more co2 from burning it.
AND, when then sun goes supernova in 5 billion years, its gonna get very warm even at your polar ice caps.
Your honour I rest the case for the defence.