Leading the briefing today is news that US biotech company Moderna's vaccine against Covid 19 was found to be 93 percent efficacious in teens in a study of 3,700 participants between 12 years and 18 years of age. Also, IBM is opening up its quantum computers to India's top research and tech institutes; and we talk to Tapan Barman, co-founder and CEO of Mihup Communications, which makes the voice assistant in Tata Motors' cars