On the occasion of World Environment Day, Expresso talks to groups of youngsters who are doing their bit for the cause CSSTCN began about 30 years back, when a group of students working to save the endangered Olive Ridley turtles, got together to conduct activities of awareness and conservation on a larger scale. The group tries to get young student volunteers together to fight against technological advances, that have increased the threat to these animals, and made all the seven species of sea turtles critically endangered.