Scientists usually character the disease leukemia as a overabundance of white blood cells in the bloodstream.

The New Deal was President Franklin D. Roosevelt's program to pull the United States out the Great Depression in the 1930s.

Dictionaries frequently explain the origin of the defined word, state its part of speech, and indication its correct use.

The Caldecott Medal, awarded annual to the best illustrated children's book, is one award that identifies excellent books.

Phoenix, Arizona, stands where the Hohokam Indians built a canal system and carried on irrigated farming before long the time of Columbus.

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

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.

Composed of heavy-textured clay soil, adobe has great elasticity when moist, but when dry is able of holding its shape.

Located in Boston, ........................ in the United States was founded in 1852.

Skimming along the surface of the ocean  or rising from it depths like delicate balloons, .......... to their aquatic habitat.