The earth has a fever that could boost temperatures by 8 degrees Celsius making large parts of the surface uninhabitable and threatening billions of peoples’ lives, a controversial climate scientist said on Tuesday.

James Lovelock, who angered climate scientists with his Gaia theory of a living planet and then alienated environmentalists by backing nuclear power, said a traumatised earth might only be able to support less than a tenth of it’s 6 billion people.

“Rain forest trees can live for centuries, even millennia, so none of us expected things to change too fast. But in just two decades - a wink of time for a thousand year-old tree - the ecosystem has been seriously degraded.”

The 43-year-old Litvinenko, who fiercely criticized Putin’s government, told police he believed he was poisoned while investigating the October slaying of Russian journalist Anna Politkovskaya, another critic of Putin.

“What is one more life thrown away in this sad and useless national tragedy? If one death can atone for anything, in any small way, to say to the world: I apologize for what we have done to you, I am ashamed for the mayhem and turmoil caused by my country.”

New video and photographic evidence that puts three senior CIA operatives at the scene of Robert Kennedy’s assassination has been brought to light.

It reveals that the operatives and four unidentified associates were at the Ambassador Hotel, Los Angeles in the moments before and after the shooting on 5 June, 1968.