"Bill discusses the reproductiory advantages of sexual reproduction vs. asexual reproduction. Students will learn about the scientific theories and evidence that seek to explain why we reproduce sexually, how it affects genetic diversity and what sexual selection is"

In ARCHAEOLOGY, Bill digs into the fascinating science of archaeology, the study of those who lived before us. Home Improvement's Richard Karn drops by to check out some ancient Tool Time-style artifacts

Find out what makes big pieces of the Earth's crust (the plates) move and what you should have on hand in case of a quake. Bill Nye also visits with scientists who study and measure earthquakes.

Contains eleven songs designed to teach elementary students multiplication facts for numbers zero through nine, as well as numbers eleven and twelve. Includes interactive "pop quizzes," a sing-along feature, a downloadable guide, and web links.

Inventions: Our lives are made easier by one invention or another, but we may not realize that not every invention is carefully planned - some of the most valuable ones came about by accident! Bill examines the process of inventing. Do-it-yourself science: You can demonstrate big scientific ideas with small, simple experiments. Get a lesson from Bill and learn how you can conduct scientific research.

Inventions: Our lives are made easier by one invention or another, but we may not realize that not every invention is carefully planned - some of the most valuable ones came about by accident! Bill examines the process of inventing. Do-it-yourself science: You can demonstrate big scientific ideas with small, simple experiments. Get a lesson from Bill and learn how you can conduct scientific research.