Such affinity with nature prompted Sengupta to launch Wanderlust, a nature camp for children, two years ago. He had originally started by getting a Calcutta mountaineering club to arrange nature treks for children 13 years ago. Six camps had followed in the next six years with groups of 20 to 50 children. "It's a great feeling to get children close to nature. Away from their sheltered lives in the city," he says. But the relationship with the club soured and Sengupta dropped out. In the next three years, he arranged annual nature camps for children with the help of another social service organisation. "Then I thought why not take charge of the whole thing and start something more meaningful," says the soft-spoken naturalist. Thus, Sengupta's own nature camp initiative, Wanderlust, was born.