Marsupials are a specific type of mammal. The common trait that distinguishes marsupial animals from other mammals is that they nurse and nurture their newborn babies, called joeys, in a pouch after they are born. Discover which types of animals are on the marsupial list and learn some basic facts about them.
With the design and construction of his first working glider, Otto Lilienthal (1848-1896) bestowed a sense of viability and respectability on the young science of aviation. Lilienthal flew thousands of flights on gliders he designed based on careful observations of birds. His work directly inspired Orville and Wilbur Wright.