“A very solid scientific consensus indicates that we are presently witnessing a disturbing warming of the climatic system,” warns Pope Francis in his landmark environmental encyclical Laudato Si’ (“On Care for Our Common Home”).
Indeed, the scientific consensus is very solid. According to the National Aeronautics and Space Administration (NASA), “97 percent or more of actively publishing climate scientists agree: Climate-warming trends over the past century are very likely due to human activities.” (see: http://climate.nasa.gov/scientific-consen us/).