Paraquat, a herbicide banned in 74 countries, draws heightened scrutiny in Australia after reports connected it to incurable illnesses. The chemical is still applied despite international limits. India has just enacted a countrywide prohibition. Studies indicate exposure to the chemical may heighten Parkinson’s disease risks. Australian farmers are seeking safer alternatives as international bans expand. The controversies follow calls for tighter local regulations. Health groups demand stricter rules amid fears of long-term harm. Paraquat’s ongoing use here contrasts with its worldwide withdrawal. Debate grows over its risk profile.