The first solar car was invented by William G. Cobb, the inventor for General Motors, in 1955, and this was followed by the invention of the first solar car which facilitated human transportation by the International Rectifier Company in 1958.
A birch is a thin-leaved deciduous hardwood tree of the genus Betula (/ËbÉtjÊlÉ/), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae.
Just as the height of the tree varies among species, so do the Birch's other characteristics: 1  Leaves: The leaves of the Birch tree are typically oval to elliptical-shaped. 2  Bark: Birch trees are known for their unique bark. 3  Flowers: The Birch tree produces flowers known as catkins.mong the most notable types are: 1  Paper Birch: Native to North America, the Paper Birch is treasured for its ornamental value. 2  The tree has a creamy white bark and delicate green leaves. 3  It is one of the largest Birches and can reach heights of 80 feet.