The purpose, life, and hazards of the Earth's magnetic field are discussed as they relate to magnetic storms. This includes their impact on animals, auroras, and even compasses. Interactive features are also included in this comprehensive site.
Earth's magnetic poles have reversed themselves throughout its long history. Find out what scientists know about these reversals. A geologic time line shows when the reversals occurred.
Explore materials science as it pertains to developing alternative ways to create clean energy. Subject matter is geared toward creating a sustainable future with a zero-waste world. [53:00]
Explore the production of six different types of vaccines. This activity is interactive, allowing you to take part in the production of the different vaccines.
Here's some virtual hands on experience for students. There are many types of vaccines and students may have a hard time understanding the processes. This interactive site requires the student to go through each procedure to make a type of vaccine by clicking on the tools needed. The processes are simplified so that you get a good overall idea for each type.
Examine how vaccines generate immune responses against pathogens in the body by creating six vaccines in this virtual laboratory.
An ant specialist? Yes! Meet naturalist E.O. Wilson who specialized in the study of ants and who presented some controversial ideas. Learn more by watching the included video, and by visiting the main site.
Listen to an illustrated discussion of the major differences between Earth and Mars. Learn more detailed information about the atmospheric conditions which drive the Martian weather. [4:34]
The interactive tutorial examines entomophagy (insect-eating). Some examples of bugs you can eat are witchetty grubs, silkworm pupae, and grasshoppers. The activity consists of a printable version and interactive version.
One of the major causes of species extinction is the introduction of alien species. Information about ten different invasive species is presented. Find out how well you know the information by matching alien species with the effects they're responsible for.
A video exploring the different types of volcanoes. [2:57]
PBS site explores mirror neurons and why humans get so worked up watching other people. Contains links to a video segment on the discovery and significance of mirror neurons, a research update involving a study using pro dancers, an audio interview as well as an exercises involving identification of noise related to brain studies.
Students learn what an F-15 fighter pilots wear in the air and what they carry in case they must eject. The interactive tutorial discusses the helmet, mask, and survival vest. The activity consists of a printable version and interactive version.
Discover how a dying star can be reborn as a black hole. View a slide show that follows the progression of events from an old, dying star to newborn black hole.
Describes the racist views of European imperialists when they encountered the ruins of Greater Zimbabwe. Also describes the archaeological history of the ruins and explores the question: who built them?
This interactive site provides geologic evidence for one of the world's largest prehistoric floods. Nova's interactive map has numerous pictures of the Scabland's geologic features formed when Glacial Lake Missoula's ice dam gave way and floodwaters roared through the Northwest United States.
For a week in April 2005, Dr. Naomi Halas, a pioneering nanotechnologist at Rice University, answered questions about nanoshells and the role of women in science. This is the Halas' interview about nanoshells.
Which dictates our existence? Is it our genetic makeup or the environment we grow up in? Kevin Davies offers an update on this long-standing debate, from the NOVA: "Cracking the Code of Life" Web site.