sentences:  Ex-Mayor of London and current Prime Minister Boris Johnson had repeatedly suggested in his "Daily Telegraph" column and elsewhere that Corbyn might be correct.Corbyn has, however, criticised Margaret Thatcher's promotion of man-made global warming (also saying that she later recanted her position) around the time of the 1984–85 miners' strike, judging it a disingenuous attempt to justify shutting down coal mines.Following some years of weather prediction as an occupation, he formed WeatherAction, a business, in 1995.