Global Warming and Climate Change Updated!
Strong scientific evidence suggests that the Earth's climate is changing as a result of human activity. Emissions of greenhouse gases, combined with human destruction of ecosystems that help remove greenhouse gases, are driving a sharp rise in greenhouse gas levels. This rise is creating an upward trend in global warming that can be distinguished clearly from Earth's natural cycles.
According to the Fifth Assessment Report (AR5) of the Intergovernmental Panel on Climate Change (IPCC), compiled by leading scientists and released in 2014, "atmospheric concentrations of the greenhouse gases carbon dioxide, methane, and nitrous oxide have all increased since 1750 due to human activity." In 2011 the concentrations of these greenhouse gases exceeded pre-industrial levels by about 40 percent, 150 percent,...Read more