Mark John Millan was born in Edinburgh. He originally studied Natural Sciences (Zoology and Ecology) at Cambridge but retrained thereafter in Neurosciences at the Max Planck Institute for Psychiatry in Munich, and he has continued his research into the causes, prevention and treatment of disorders of the brain in France where he has worked for more than 30 years. He has published more than 400 papers, been cited more than 30,000 times, and won several prizes. He frequently evokes ecosystems in his lectures since their damage and the resulting loss of biodiversity, together with climate change, have a negative impact on mental - and physical - health. Mark is also a keen photographer, exhibiting his work at various collective and solo exhibitions. Converging his professional and personal interests, he has photographically documented wildlife and in particular bees, butterflies and other insects in his partially re-wilded garden just outside Paris – around 500 have been documented. These photos are used as a basis for articles, blogs, talks and exhibitions that encourage people to do more to preserve biodiversity locally - as well as globally - with benefits for their own mental well-being as well as for nature itself.