Gurgaon, Jan 25 (ANI): Highlighting the importance of combating global warming, Prime Minister Narendra Modi on Monday called for the imperative need to strike balance between development and preserving the environment. Prime Minister Modi said that new environment friendly innovation is the only key available to unlock the problem of global warming. He added that US, France and India took a joint initiative at the COP21 to promote innovation and added that the alliance intends to bring together 122 nations that have more than 300 days of sunlight in a year.