Forty years ago, an Indian city was the scene of one of the world's worst industrial disasters.
On the night of December 2, 1984, toxic gas leaked from the Union Carbide India pesticide factory in Bhopal, enveloping the central Indian city in a deadly fog that killed thousands and poisoned about half a million people.
According to government estimates, around 3,500 people died within days of the gas leak and more than 15,000 in the years that followed. But activists say the death toll is much higher and victims continue to suffer side effects from the poisoning.
In 2010, an Indian court convicted seven former managers of the factory, sentencing them to minor fines and brief prison terms. But many victims and activists say justice has still not been served, given the scale of the tragedy.
Union Carbide was an American company acquired by Dow Chemicals in 1999.
Warning: This story contains details and photos that some readers may find distressing.