Catastrophic flooding from Harvey continues today, setting an all-time continental U.S. record of nearly 52 inches of rainfall, as two of Houston's reservoirs have over-topped their dams, a levee has been breached South of Houston, thousands of rescues continue, tens of thousands are stranded in their homes and in shelters, and we are still days away from the water receding. David Roberts, environment and politics journalist from Vox.com, joins us to discuss the ongoing disaster -- the type of which he has been warning about for more than a decade -- and what we know and don't know about the effect of climate change on this storm and its unprecedented rainfall. We discuss the failure of infrastructure officials, in Houston and elsewhere around the nation, to take appropriate measures to adapt to, much less help mitigate, the impacts of a quickly changing climate that scientists have long warned will become more and more destructive thanks to the ongoing man-made emissions of greenhouse gases from the burning of fossil fuels.\xa0 Will the destruction of Harvey finally force officials to take action? We also discuss some new revelations regarding Exxon's decades-long private knowledge and public denial of global warming, and Energy Secretary Rick Perry's recently commissioned Energy Dept. study on the effect of renewable energy on the power grid and its relationship, if any, to hastening the demise of the coal industry. Then Desi Doyen joins us for 'Green News Report' special coverage of the Harvey disaster and, speaking of Exxon, news of refinery shutdowns and toxic petrochemical spills after flooding at two of its units outside Houston...