Exxon -- one of the world's most powerful oil companies -- knew for decades that the use of its products was warming Earth's climate. At the same time, Exxon was funding climate change deniers, who were influential in resisting limits on the burning of fossil fuels. Accused of hiding the truth for profit, Exxon says all its records are open.
Later on today's program, the Presidents of Mainland China and the Chinese Republic of Taiwan are set to make history this weekend -- with the first meeting of two Chinas since Mao Zedong drove Chiang Kai-shek off the mainland in 1949. We get an assessment.
Photo: Minale Tattersfield