Metalloids
Sometimes acting as metals and sometimes as nonmetals, the metalloids may be the strangest and most useful group of elements on the periodic table. Segments in this program include Exploring Metalloids (properties of the metalloids); Boron: Pyrotech...
The History of Computers
The history of computers is not just the story of a specialized machine but of a great idea and the people who made it happen. Initially designed as large-scale calculators, computers have quickly become indispensable tools in every field of endeavo...
Connections: the wheel of fortune
The power to see into the future with computers originally rested with priest-astronomers who knew the proper times to plant and harvest. The constellations influenced life spectacularly, particularly when the ailing Caliph of Baghad was cured by an...