How Long has Climate Science been around:http://www.ecowatch.com/katharine-hayhoe-climate-change-2103671842.html?utm_source=EcoWatch+List&utm_campaign=8345c0dad9-MailChimp+Email+Blast&utm_medium=email&utm_term=0_49c7d43dc9-8345c0dad9-85337061
“….For more than 150 years, we’ve known that mining coal and burning fossil fuels produces heat-trapping gases. For more than 120 years, we’ve been able to put numbers on exactly how much the Earth would warm if we artificially increased carbon dioxide levels in the atmosphere. And it’s been more than 50 years since the President’s Council of Advisors on Science and Technology formally warned a U.S. president—Lyndon B. Johnson—that building up carbon dioxide in the atmosphere would “almost certainly cause significant changes” and “could be deleterious from the point of view of human beings.”
It all started in the 1820s, when a French mathematician named Joseph Fourier realized that, for the Earth to be in equilibrium with the energy it was receiving from the sun every day, it should be a lot cooler than it actually is: around 33 degrees Celsius or nearly 60 degrees Fahrenheit cooler. In fact, it should be a ball of frozen ice. But it isn’t….see link..”