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Evidence tying the popular weed killer paraquat to Parkinson’s disease is featured this week in an online news segment that includes fresh details about corporate influence over US regulators and suppression of scientific research.

Al Jazeera’s investigative show Fault Lines highlights the reporting of The New Lede (TNL) and the thousands of internal corporate documents obtained by TNL that reveal decades of efforts by Syngenta, paraquat’s longtime manufacturer, to conceal evidence of how chronic exposure to paraquat can cause Parkinson’s disease.

Last month, the “Paraquat Papers” reporting by The New Lede was also the focus of an ABC News Nightline segment.

The New Lede, in collaboration with The Guardian, first revealed a trove of internal Syngenta documents in October 2022 and followed up in subsequent stories, exposing years of corporate efforts to cover up evidence that paraquat can cause Parkinson’s disease. The documents obtained by The New Lede additionally showed evidence of efforts to manipulate and influence the Environmental Protection Agency (EPA) and published scientific literature. The documents also show how the company worked to mislead the public about paraquat dangers, among other secret strategies.

The Fault Lines piece adds to TNL reporting with several on-camera interviews.

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