From the "Journey to Planet Earth" series, PBS takes a look at the world's exploding urban population. Includes video clips and educational resources.

The innovative resource examines images of the Sun, Moon, Pluto, and all eight planets in the Solar System. Learners calculate the diameter of each object and rank the objects in order of size. The activity has an interactive online...

With this resource, users join investigators in the exploration of humans' use of and dependence on the many energy resources. Learn about new technologies such as carbon capture and sequestration as an alternative to reduce our carbon...

Review planets orbiting in the solar system using this study guide.

This impressive compilation of ideas is a great source for space science. Loaded with extra links for further information on the solar system.

Article reports on the recent discovery that many suns in the universe host "Earth-like" planets. Includes a vocabularly list.

This is a student led activity in which students have to accomplish the task of choosing the most entertaining way to relay written expository information. Art/self expression along with technology are utilized to develop a classroom...

Review celestial bodies using this study guide.

This image, titled "Is There Anybody Home?" features six fuzzy pictures depicting six stars associated with known planets. The text under the image details various specifics about the picture and the planetary system associated with the...

Learn about water as a precious resource in danger of being depleted. Understand the roles that overuse and agricultural use play in the sustainability efforts of this essential resource. Includes video. [28:25]

This is an extensive learning module on biodiversity and its decline. It looks at ways biodiversity is threatened, the possibility of another mass extinction, the causes and consequences of habitat loss, factors that drive biodiversity...

Create the parameters of your own ecosystem by choosing which producers and consumers live there. Visualize how the food web operates and species populations change. This simulator mimics the food web within a typical ecosystem and gives...

A variety of hands-on activities, investigations, and explorations designed to engage learners in discovering planet Earth.

From ABC News in Science, Marilyn Head's article explores the possibility entertained by several researchers that the key to discovering life beyond Earth (or habitable planets) is in studying rainbows.

This image, titled "Planet Clumps and Crystals around Brown Dwarfs" features a chart representing four brown dwarf stars. The text under the image details various specifics about the picture.

Read about our solar system and its formation over 4.6 billion years ago. Find out about the planets, asteroids, meteors, satellites, and comets. More in-depth planet background can be accessed through links.

Describes in detail the devastating storms that occur on Uranus.Also includes an .mpeg movie showing the rings of Uranus up close. (Mar. 29, 1999)

Discusses the information from the NASA spacecraft Messenger as it orbits Mercury and transmits photographs of the planet's surface to Earth.

Features a collection of hands-on activities, investigations, and explorations designed to engage students in learning about ice, both in the solar system and on planet Earth.

From ABC News in Science, Marilyn Head's article centers on research behind the discovery of the planet in the Milky Way which most closely resembles the planet Earth.

From ABC News in Science, Irene Klotz's article discusses research related to the possibility of Neptune having "nabbed" its moon, Triton, from some passing sister planets.

Read about some of the most important space discoveries in recent times.

Earth's temperature depends on the balance between energy entering and leaving the planet's system . When incoming energy from the sun is absorbed by the Earth system, Earth warms. When the sun's energy is reflected back into space,...