Access to the right data has helped tackle many challenges, from the early detection of diseases to addressing climate change, but collecting and sharing data has to be done with great care and safety. In this episode, we take a look at different forms of data stewardship, from individuals and communities, to institutions, and ask the question – who looks after the data? The ODI’s Emma Thwaites is joined by Dr Wen Hwa Lee, Jack Hardinges and Astha Kapoor.