This renowned climate scientist says this is the most difficult time for climate science he’s ever seen

In 1995, Benjamin Santer was the lead author on a chapter of the second Intergovernmental Panel on Climate Change (IPCC) that would alter climate science forever. In a culmination of more than a year of meticulous research, the chapter came to a groundbreaking conclusion—confirming an international scientific consensus that humans were having a discernible impact on the climate.

The pushback was immediate and immense. Lobbyist groups erroneously accused Santer of removing discussion of scientific uncertainty in the report.