He used to be all over the telly, an enthusiastic naturalist inspiring viewers with his wide knowledge of love of the outdoors.
And then he became a climate skeptic. And his career suddenly started to bomb.
A respected botanist and the author of 35 books, he had presented around 400 programmes over the years and was appreciated by audiences for his boundless enthusiasm.Read on here for his story, which shows the price that can be paid "for not toeing the orthodox line on climate change."
Yet for more than 10 years he has been out of the limelight, shunned by bosses at the BBC where he made his name, as well as fellow scientists and environmentalists.
His crime? Bellamy says he doesn’t believe in man-made global warming.