The Scott Polar Research Institute houses the world's most comprehensive polar library and archives.[13] The Institute's Thomas H. Manning Archive contains an unparalleled collection of manuscript material relating to research in and exploration of the polar regions, For scientists and scholars, the library offers a collection developed since the 1920s covering all subjects relating to the Arctic, the Antarctic, and to ice and snow wherever found. For industry, it is a prime information source on such subjects as exploration and exploitation of natural resources and on the environmental implications of such activities in the polar regions; on the design of ice-strengthened shipping and selection of sea routes; and on problems of construction and transportation in cold environments. The library also offers an unrivalled resource for the needs of international relations and strategic defence.