Among Galileo's historic scientific findings was that the sun revolved around the earth. Galileo found through research that the earth revolved around the sun, disputing the belief held by The Roman Catholic Church that the earth was the center of the universe. He refused to obey orders from Rome to terminate discussions of his theories and was sentenced to life imprisonment. Galileo's theories and inventions that were thought to be unconventional are now the baseline of modern science today.

Explains the difference between relative and absolute geologic time. Describes how by interpreting the sequence of layers in sedimentary rocks the geologic history of an area can be determined.

The equipment required to build and install a geothermal heating and cooling system for a home to replace a propane, natural gas or electrical system.

Information and discussion of the effects of global warming.

The costs and problems of global warming.

Temperature, time has told us, is a fickle thing-prone to many variables. One day man may be able to calculate where our spinning home in the universe is going, what we can expect: whether a frozen winter dusk is our future or a blazing fiery sahara or an unaltered static terrain, but that time is not today, for now we are blinded by the lights of too many conflicting truths.

Not only is global warming harming species of life such as polar bears around the poles, but throughout the entire planet. Scientists studying a deteriorating species of colorful frogs in Central and South America say global warming has joined with a spreading fungus that is creating vast areas of once plentiful living conditions of misty mountainsides to extinction.

Briefly discusses the Grand Canyon and how it was formed.

Describes the great feelings of hunting.