They compared prices at Whole Foods stores in half a dozen cities to those at various competing supermarkets to determine which stores were cheaper. They found that Whole Foods is about 15% more expensive than other conventional supermarkets, such as Kroger, Wegmans, and Safeway.
A type of igneous rock. Basalt is the most common rock type in the earth's crust and makes up most of the ocean floor.
Manganese nodules are found scattered on the ocean floor. Though generally composed of manganese (hence the name), they can also be made of iron, nickel, copper, and other metals. This recently discovered batch, located several hundred miles east of Barbados, is the largest yet discovered in the Atlantic Ocean. 1.