NEW DELHI : Using a computer model, scientists at the Indian Institute of Technology (IIT) - Bombay have shown that a hotter and drier weather is linked to lower survival chances of the novel coronavirus on surfaces, a finding that may lead to better sanitisation guidelines for public spaces across the world.The study, published in the journal Physics of Fluids, assessed how long the novel coronavirus, SARS-CoV-2, remains viable for infection after someone with COVID-19 coughs or sneezes.In order to calculate this, the researchers, including Rajneesh Bhardwaj and Amit Agarwal from IIT-Bombay, examined the drying time of respiratory droplets from infected subjects on various surfaces in six cities around the world, including New York and.