So, err, you say the earth has stayed the same temperature even though the sun has got hotter, and this is because the greenhouse effect must now be far weaker than it was 4 million years ago?
Then it's true, the greenhouse effect is in fact receding and we can all rest easy in our beds knowing the global warming scientists are speaking , as I suspected all along, a big load of tosh.
Trouble is where lobbyists and politicians get hold of science and statistics, they can manipulate it to show their own points of view and ignore the rest. Very dangerous.
[cough] millennium bug[/cough]