Global warming must be true, Charles Manson believes in it. Killer breaks 20-year silence on 40th anniversary of gruesome Sharon Tate murders

The infamous killer, who started championing environmental causes from behind bars, bemoaned the 'bad things' being done to environment in a rambling phone interview from his Californian jail cell.

'Everyone’s God and if we don’t wake up to that there’s going to be no weather because our polar caps are melting because we’re doing bad things to the atmosphere.

'If we don’t change that as rapidly as I’m speaking to you now, if we don’t put the green back on the planet and put the trees back that we’ve butchered, if we don’t go to war against the problem...' he added, trailing off.

Manson, who described himself to his interviewer as a 'bad man who shoots people', brainwashed members of a commune known as The Family into butchering eight people including film director Roman Polanski’s pregnant wife Sharon Tate in July and August 1969.