Science is the discovery of truth through observation of evidence

What science can NOT do:
1. Obtain evidence about temperature changes in the future (have to visit the future to do so)
2. Measure global temperature sensitivity to greenhouse gas concentration (have to be able to experiment with planned adjustments to greenhouse gas concentration)
3. Measure the number of angels that can dance on the point of a pin (no observational protocols available).

Predictions about how global temperature will change, or not change, at different times in the future and how it will respond, or not respond, to human activity, are not science. They are mere assertions, satisfying social engineering ambitions such as funding a network of climatologists, or linking the people to an array of Fukushimas and Chernobyls, or merely dictating how they should conduct their lives.

There are excellent reasons for concern about CO2 emission that do not depend on promoting a secular religion, with the ritualised mass bullying and demonising of deniers characteristic of religion, but do depend on what science does tell us: every mole of CO2 emitted signals a mole of natural combustible carbon consumed - carbon which will not be recycled or replaced at a rate even remotely approaching that of its consumption- and that every mole of CO2 reacts with water to give two moles of acid.