The most recent report of the Intergovernmental Panel on Climate Change (IPCC), the body of the world’s leading climate scientists, was published in three parts in 2013 and 2014. The findings strengthened the science reported in 2007, with an elevated certainty — now 95 percent — that warming has a human cause and included refinements on projections for changes in sea level, ice melt, upper atmosphere warming and other parameters.