In France, volunteers to shut themselves in a cave for 40 days with no notion of time

A group of 15 volunteers is set to live in isolation for 40 days in a cave in southwestern France, as part of an experiment looking into how humans when they have no notion of time. The Deep Time project will see the volunteers live in humid 12 degree conditions with a view to learning more about human behaviour when people are deprived of their usual way of life - a question scientists are keen to know more about in the context of coronavirus lockdowns.