The three modern orders of amphibians are Anura (the frogs and toads), Urodela (the salamanders), and Apoda (the caecilians). The number of known amphibian species is approximately 7,000, of which nearly 90% are frogs.The smallest amphibian (and vertebrate) in the world is a frog from New Guinea (Paedophryne amauensis) with a length of just 7.7 mm (0.30 in).mphibians have a skeletal system that is structurally homologous to other tetrapods, though with a number of variations. They all have four limbs except for the legless caecilians and a few species of salamander with reduced or no limbs. The bones are hollow and lightweight.
Harrison Ford Honored With Prestigious Wright Brothers Award. One of the general aviation communityâs own was honored on December 17, 2010, for his long-standing advocacy in support of aviation at the Aero Club of Washingtonâs annual Wright Memorial Dinner, which was attended by hundreds of aviation leaders from government and industry.
The Wright Brothers. Born four years apart, brothers Wilbur and Orville Wright grew up in a small town in Ohio. They shared an intellectual curiosity and an aptitude for science, at a time when the possibility of human flight was beginning to look like a reality. Together, the Wright brothers developed the first successful airplane in Kitty Hawk, North Carolinaâand together they became national heroes. Considered the fathers of modern aviation, they developed innovative technology and inspired imaginations around the world.