2023 will mark the 75th year of the World Health Organization. The world has achieved many public health milestones in these 75 years. In Science in 5 today we will take a look into the future - to understand what are the innovations we can expect and what will be some of our biggest challenges. Here to paint us a picture of what Health for All would look like in the future is WHO's Chief Scientist, Dr Soumya Swaminathan.