An Indian sex attacker has lost his final appeal against his execution after he argued that his life will already be shortened by Delhi's 'gas chamber' pollution. Akshay Kumar Singh, 31, was one of four men sentenced to death for the fatal gang rape of a woman on a bus late at night in December in 2012. The victim, physiotherapy student Jyoti Singh, 23, who was dubbed 'Nirbhaya,' or 'Fearless' ...