U.S. Report Says Humans Cause Climate Change, Contradicting Top Trump Officials

U.S. Report Says Humans Cause Climate Change, Contradicting Top Trump Officials:

Over the past 115 years global average temperatures have increased 1.8 degrees Fahrenheit, leading to record-breaking weather events and temperature extremes, the report says. The global, long-term warming trend is “unambiguous,” it says, and there is “no convincing alternative explanation” that anything other than humans — the cars we drive, the power plants we operate, the forests we destroy — are to blame.