Warning the world that it is on the brink of disaster has been lucrative for Al Gore.

His wild prediction at Davos that Earth faces ‘rain bombs’ and ‘boiling oceans’ is just his latest in decades of climate alarmism.

At the same time, the former VP has been at the forefront of green technology investment that has seen his wealth balloon to an estimated $330 million.

Four years after losing to George W Bush in 2000, Gore set up Generation Investment Management with former Goldman Sachs Managing Director and close friend David W. Blood.

The mission statement of the investment firm, where Gore collects $2 million in a monthly salary, is to back companies that are making strides towards going green. The firm is worth around $36 billion.

He proudly said of his role at the fund, when it launched, was that of a figurehead saying: ‘I’m not a stock picker.’