Napa cabbage choy (from the Cantonese name, ), and celery cabbage. In the United Kingdom this vegetable is known as Chinese leaf, in New Zealand as wong bok or won bok, and in the Philippines as wombok or pechay baguio. The name wombok is also used in Australia. Another name used in English is petsai or pe-tsai. In Russia it's called pekinskaya kapusta (), literally "Peking cabbage". The first notation of Napa cabbage cultivation date from the 15th Century in the Yangtze River region in China. Then it spread to Korea and Japan. Beginning in the 19th Century with the Chinese diaspora,
Vegetable oils as alternative energy that yields 20% more oil than the standard variety. There is concern that the current growing demand for vegetable oil is causing deforestation, with old forests being replaced with oil palms. When land is cleared it is often burned, which releases large amounts of the greenhouse gas CO. Vegetable oil production would have to increase substantially to replace gasoline and diesel. With current technology such an increase in production would have a substantial environmental impact. In some poor countries the rising price of vegetable oil is causing problems. There are those that say using a food crop for fuel sets