The wood of the tulip tree, sometimes referred to as American whitewood, is one of the most valuable timber product in the United States.

Linseed oil is used as a drying oil in paints and varnishes and as making linoleum, oilcloth, and certain inks.

The foot is used primary for locomotion, but some primates, notably the apes, also use their feet for grasping and picking up objects.

Knowledge of the rate at which a ship is traveling through the water is important if the navigator need to estimate the time of arrival.

In the spring the woodcock builds a simple nest of leafs and grass in a dry, quiet spot and lays four multicolored eggs

For centuries the aromatic spices of the Far East has been in demand by the people of the East and West.

Although best known for her prose works, Maya Angelou was also published several collections of poetry.

Anyone rowing a boat in a strong wind knows it is much easy to go with the wind than against it.

Founded by the Spanish as Yerba Buena in 1835, what is now San Francisco was taken over by the United States in 1846 and later renamed it.

From the monitoring of earthquake waves it is evidence that the Earth's outer core is liquid, whereas the inner core is solid.