EVERYDAY SCIENCE

Detailed explanation-1: -Of these, 97% agree, explicitly or implicitly, that global warming is happening and is human-caused. It is “extremely likely” that this warming arises from “human activities, especially emissions of greenhouse gases” in the atmosphere.

Detailed explanation-2: -The survey found 97% agreed that global temperatures have increased during the past 100 years; 84% say they personally believe human-induced warming is occurring, and 74% agree that “currently available scientific evidence” substantiates its occurrence.

Detailed explanation-3: -About 85% of the world’s population is already being affected by human-driven climate change, an October study in Nature Climate Change finds.

Detailed explanation-4: -Notes. Globally, the primary sources of greenhouse gas emissions are electricity and heat (31%), agriculture (11%), transportation (15%), forestry (6%) and manufacturing (12%).

Detailed explanation-5: -About 97 percent of climate experts-the scientists who are most active in carrying out and publishing research on climate change-agree that the observed recent warming is real and serious and overwhelmingly human-caused, and that it will become even more serious unless we make big changes in how we generate energy.