Bok choy Bok choy Bok choy, pak choi or pok choi (; "Brassica rapa" subsp. "chinensis") is a type of Chinese cabbage. "Chinensis" varieties do not form heads and have smooth, dark green leaf blades instead, forming a cluster reminiscent of mustard greens or celery. "Chinensis" varieties are popular in southern China and Southeast Asia. Being winter-hardy, they are increasingly grown in Northern Europe. This group was originally classified as its own species under the name "Brassica chinensis" by Linnaeus. Other than the ambiguous term "Chinese cabbage", the most widely used name in North America for the "chinensis" variety is "bok choy"
Vegetable oils as alternative energy than biodiesel. After there are production cars that can use straight vegetable oil and a standard type available at gas stations, consumers will probably choose straight vegetable oil to save money. So the transition to vegetable oil can happen gradually. Other methods, like nuclear power, fusion power, wind power and solar power, may provide cheaper electricity, so vegetable oil may only be used in peaking power plants and small power plants, as diesel is limited to today. There is at least one 5 MW power plant that runs on biodiesel. MAN B&W Diesel, Wärtsilä and other companies produce engines suitable