Trees frame a rusting building at the abandoned former Union Carbide pesticide plant in Bhopal, India, on November 11, 2014. On the night of December 2, 1984, the factory, owned by the U.S. multinational Union Carbide Corporation, accidentally leaked methyl isocyanate and other highly toxic gases into the air, killing thousands of largely poor Indians in the neighborhoods nearby. #

This photograph taken on December 17, 1984, shows bodies of victims lined up following a poison-gas leak that killed thousands from the Union Carbide factory in Bhopal. #

Water is hosed onto canvas screens set up around the Union Carbide plant in Bhopal on December 18, 1984, as part of measures taken to avoid further leakage of fumes that had earlier caused a huge number of deaths and injuries. #

A December 1984 photo shows victims who lost sight after a poison-gas leak from a pesticide plant in Bhopal in front of the U.S. Union Carbide factory (shown in background). #

A worker cleans dust as he displays a panel of photographs of some of the thousands of people who died in the 1984 Bhopal gas disaster at the forensic department of Gandhi Medical College in Bhopal on June 8, 2010. #

(2 of 2) Ram Chandra sits alone in Bhopal on November 15, 2014. Chandra said that his wife Prema died as a result of gas poisoning after the 1984 Bhopal disaster. #

(2 of 2) Zubeida Bi sits alone in Bhopal on November 11, 2014. Bi said that her husband Rehman died as a result of gas poisoning after the 1984 Bhopal disaster. #

The flare tower, where highly toxic methyl isocyanate gas was released into the air in the 1984 disaster, at the abandoned Union Carbide pesticide factory in Bhopal on November 28, 2014 #

Former maintenance worker, Mohammed Yaqub, poses in his house with his old identity card from the defunct Union Carbide pesticide plant in Bhopal where he once worked, on November 13, 2014. #

A girl who suffers from hearing and speech disorders reacts to the camera at a rehabilitation center supported by Bhopal Medical Appeal, for children who were born with mental and physical disabilities, in Bhopal, on November 11, 2014. The rehabilitation center only treats families they believe have been affected by the Union Carbide gas leak 30 years ago. #

Bhopal gas disaster survivor Akbar Khan, 70, sits inside a steam box as part of a rehabilitation using traditional Ayurvedic treatment at the Sambhavna Trust Clinic in Bhopal on December 1, 2014. #

A partially blind gas victim waits for a verdict with other victims in the premises of Bhopal court in Bhopal, India, on June 7, 2010. An Indian court convicted seven former senior employees of Union Carbide's Indian subsidiary of "death by negligence" for their roles in the Bhopal gas tragedy that left thousands of people dead more than a quarter century previously, in the world's worst industrial disaster. #

A boy who was born with a mental disability looks out of a window at a rehabilitation center supported by Bhopal Medical Appeal for children who were born with mental and physical disabilities in Bhopal on November 11, 2014. #

Fifteen-year-old Sachin Kumar crawls on his hands and knees through his home in a slum near the site of the deserted Union Carbide factory on November 30, 2009, in Bhopal, India. Sachin lives with his parents Suresh and Sangita; his three sisters, Jyoti, Arti, and Punam; and his brother Ravi, in a slum where a number of people affected by either water contamination or poison contamination have been relocated. Sachin was born with a birth defect rendering his legs practically useless. He had been receiving physical-therapy treatment and education from the Chingari Trust Rehabilitation Center for victims of the 1984 gas tragedy, however his health has taken a turn for the worse and his legs, now covered with open sores, restrict him from traveling to the major road where the Chingari Trust bus can pick him up for daily treatment. The oldest of four, Sachin spends his days playing board games with his friends and a rare game of cricket, which he sees as the fulfillment of his dreams of becoming a professional cricket player. #