Environmentalist and former Vice President Al Gore told a group of environmentalists that man-made global warming has made the flooding in Houston, Texas and Louisiana much worse. 

“Texas has really been hit hard by the climate crisis and, for the last 35 years, has had more billion-dollar-plus climate disasters than any other state,” Gore said said at an event held Tuesday by his activist group, The Climate Reality Project. “Houston in particular has been hard hit.”

Tens of thousands of Louisiana residents have been displaced and had their homes destroyed from the extreme flooding. More than 40,000 homes have been destroyed and 11 people have been killed.

Some parts of Houston saw 20 inches of rain, leaving six people dead and 1,200 people needing rescue.

“These kinds of record downpours — that’s one of the manifestations of the climate crisis,” Gore said.

“It is central to the prospects for our future, for the futures of our families and our communities, and the future of human civilization,” he said. “That sounds overly expansive but that really and truly is the case.”

Recently published research contradicts Gore's claim that the flooding has anything to do with global warming.

A new study by University of Iowa researchers found “the stronger storms are not getting stronger, but a larger number of heavy precipitation events have been observed.” But researchers couldn’t attribute such events to man-made warming, instead they wrote “the climate variability of both the Atlantic and Pacific Oceans can exert a large control on the precipitation frequency and magnitude over the contiguous USA.”

Another study led by a scientist with the National Oceanic and Atmospheric Administration (NOAA) concluded “no evidence was found for changes in extreme precipitation attributable to climate change in the available observed record.”

But don't expect Gore to change his message anytime soon.