Prime Minister Narendra Modi on Sunday announced that the Chandigarh airport will be renamed after Bhagat Singh as a tribute to the freedom fighter. In his Mann Ki Baat radio broadcast in where he referred to diverse issues, Mr. Modi spoke of climate change which he said is a major threat to marine ecosystems and expressed concern about the “disturbing” menace of litter on beaches. “It becomes our responsibility to make continuous efforts to tackle these challenges,” he said. In the broadcast, Mr. Modi paid tributes to BJP ideologue Deendayal Upadhyay, saying he was a profound thinker and a great son of the country.