Wendy Grace spoke to Graham Mulhern about how to prevent 'Technostress’, and to Eleanor Wall about re-opening her pet farm next week. Ashwin Chacko talked about his new book 'The Little Optimist', and Liam Herrick spoke about the problems with proposals for a Digital Green Certificate. It’s World Earth Day and Susan Adams chatted with Wendy about biodiversity and why it is so important.