Kenyan founder of the community-based tree planting initiative Green Belt Movement and Nobel Prize laureate.
American academic, president of Carnegie Corporation of New York and former president of the New York Public Library.
English actor, director, producer, medical doctor, and man of letters noted for his wide-ranging abilities.
Nobel Prize-winning Dutch atmospheric chemist known for work on climate change research and for popularizing the term Anthropocene.
Archaeologist with an expertise in the behaviour of prehistoric hunter-gatherers and the evolution of mind, intelligence and language.
American evolutionary biologist who linked common diseases of unknown origin to chronic low-level infections from viruses, bacteria or protozoa.