Railroads in U.S. history (1830-2010): the second great railroad boom (1871-2010)
The Gilded Age, an era of great wealth and vast power, was driven by the railroad industry. It was also a period when the Federal government finally decided to step off the sidelines and help direct the nation's economy by controlling the railroads....
Glaciers and ice caps: the melting
The change from a solid state - snow and ice - to a liquid state - water - makes the Arctic sensitive to climate change. The shrinking of glaciers and ice caps and the melting of permafrost introduces many dangerous positive feedback loops that can...
Railroads in U.S. history (1830-2010): a new era in American railroading (1861-1870)
During the Civil War, railroads dramatically changed the way war was waged forever. But even more significantly for America, President Abraham Lincoln set the course for railroads to place the nation on the path to greatness as a world power. This p...
Railroads in U.S. history (1830-2010): railroads come to America (1830-1840)
In 1830, America was an agrarian nation slowly inching its way west across the continent, but that was about to change spectacularly with the introduction of the steam locomotive and railroads. These topics, along with how a steam engine works, are ...
Global warming : science and solutions: the science of global warming
We cannot predict the consequences of global warming without clearly understanding “how” and “why” global warming is occurring. This program takes you through the complexities and science of our atmosphere, the numerous biogeochemical cycles...
Life after oil: the new energy alternatives
This program shows how we can replace our dependence on fossil fuels through technological innovation and will power. It discusses the six alternative energies that will free us from dependence on foreign oil: wind power, fuel cells, hydrogen fuel, ...
Core meteorology: climates
Meteorology, once the simple study of atmospheric events - storms, hurricanes, tornadoes, and temperature changes - has grown in the 21st century to include such disciplines as atmospheric chemistry and physics, climatology and global warming. This...
A history of Hispanic achievement in America: Spain comes to the new world
Hispanic Achievement and Latino Achievement are presented in this first program on Hispanic Heroes and Colonial History spanning 1492-1538. In this series, eight half-hour shows chronicle the story of Hispanic Americans and their culture, their ach...
When the water tap runs dry
The greatest impacts from climate change will not be warmer temperatures but water shortages. Learn how America's water infrastructure is incapable of handling these changes. Solutions exist that will make us rethink everything from how we use water...
Core biology: microbiology and genetics
No biological sciences have more promise for the future of mankind than genetics and microbiology. Microbiology, which includes genetics, is the story of understanding how the cell works. All life is cellular life ... All animal and plant tissue is ...