Mr Salmond also announced that Terry Garcia, executive vice president of National Geographic Society, has agreed to chair the Scottish government Saltire Prize challenge committee.

BBC: Pelamis wave power device. Pic: Pelamis

The archaeology exhibit, a collaboration between the science centre, the University of Pennsylvania Museum of Archaeology and Anthropology, and the National Geographic Society, displays props, drawings, and set designs from the Indiana Jones movies as well as actual artefacts from real-life digs.

BBC: Following the royals through North America

Teach them geography by giving them age-appropriate atlases and travel books for the journey, and hang a large map on their bedroom wall where they can pinpoint their travels, suggests Jennifer Emmett, editorial director of National Geographic Society's children's books department.

CNN: Give children the gift of travel