Many agree that his research on ice caps across the world was some of the first, most convincing evidence that current climate change is due to human activity. (discovermagazine.com)
The media frequently declares that thousands of scientists all agree that the planet's slight warming in the late 20th century was due to human activity. (nofrakkingconsensus.com)
There is very little room for doubt that observed climate trends are due to human activities. (planet3.org)