Not changing the data - is all that is needed ... apart from looking at ALL of the data rather than in a biased tiny data set way with an agenda.
Lomu you will have trouble explaining how you were conned by such to your grand children.
ALL of the elements of a con are present in the global warming fiasco; changing the name to climate change a super easy give away except for the religious type nuts with closed minds to the truth.
None so blind as those who refuse to see.
4 degrees colder now than during Minoan times...... It does not get any easier than that.... ignore it and you are not a rational being.