Description: The 19th century was a transformative time for the natural sciences. New discoveries didn't just happen in an armchair. Scientists adventured into unfamiliar territory by land and sea on expeditions, and their new findings fed new theories. Groups like the Columbian Institute for the Promotion of Arts and Sciences and the National Academy of Sciences formalized America's place
Description: While only two years old, World Migratory Bird Day is just one of the latest evolutions in conservation awareness. Related celebrations go back more than twenty-six years and draw on over a century of research.