I only learned of this one from Behind the Bastards
Edit to add
On 3 December 1984, over 500,000 people in the vicinity of the Union Carbide India Limited pesticide plant in Bhopal, Madhya Pradesh, India, were exposed to the highly toxic gas methyl isocyanate, in what is considered the world’s worst industrial disaster.[3] A government affidavit in 2006 stated that the leak caused approximately 558,125 injuries, including 38,478 temporary partial injuries and 3,900 severely and permanently disabling injuries.[4] Estimates vary on the death toll, with the official number of immediate deaths being 2,259.[5] Others estimate that 8,000 died within two weeks of the incident occurring, and another 8,000 or more died from gas-related diseases.[6] In 1989, Union Carbide Corporation (UCC) of the United States paid $470 million (equivalent to $1.03 billion in 2024) to settle litigation stemming from the disaster.[7]
Bhopal disaster
I only learned of this one from Behind the Bastards
Edit to add
Since I’ve come back from India I’ve sort of just been waiting to hear about an environmental disaster there. This makes sense.