The Intergovernmental Panel on Climate Change (IPCC) published in 2001 an assessment document on the global and regional evidence for and the potential impacts of climate change. The IPCC said ..”there is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities.” To the question is the Earth warming, the answer is a scientifically unequivocal YES. Science is also clear that increasing greenhouse gas concentrations in the atmosphere are the most direct driver of the warming of the planet.