Read what colleagues of @MichaelEMann think of his climate science work. Mann is co-author of Harvey et al. 2017 Bioscience paper attacking the scientific integrity of zoologist Dr. Susan Crockford on polar bears. @MarkSteynOnline @AEDerocher #polarbears https://t.co/RgCbDQwqWc— Susan Crockford (@sjc_pbs) March 1, 2018