Meenakshi Wadhwa, who is among the world's finest planetary scientists, was responsible for looking for life on Mars based on return data from the rovers on the Red Planet. In a conversation with NDTV at Davos, Wadhwa said they have collected some "incredibly interesting and very tantalising" samples in terms of data that they have been able to acquire from them. The scientist who now heads the Scripps Institution of Oceanography said the plans are on hold because of budget issues in NASA.