Most scientists worldwide agree that global warming is happening and that human activity is a significant contributor. See http://www.epa.gov/climatechange/facts.html

As to what is to be done: To preserve our planet, scientists tell us we must reduce the amount of CO2 in the atmosphere from its current level of 392 parts per million to below 350 ppm. See http://www.350.org/en/mission

I stand by my statement that it is past time for the deniers (corporate polluters and their political and media shills) to shut the fuck up and stand aside, so that action can be taken before it's too late.