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

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

Describes Earth's layers, which make up the geosphere.

Explore the planet Earth through this site that includes vivid multimedia resources. Learn Earth statistics and view numerous images.

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

Focus is on the hydrosphere and contains the definition as well as characteristics of the ocean and the effect of the ocean on climate.

Learn about the element carbon and its importance on the Earth's atmosphere and sustainability of life on the planet. Additionally, understand the role the carbon cycle plays in global climate change over time.

Through graphing data and interpretation, students learn about sunspots and their effect on the climate of our planet.

Jupiter's immense gravity protects Earth from asteroids. In this video segment adapted from NOVA, scientists searching for signs of life in the universe identify solar systems with Jupiter-like planets that may be shielding smaller...

Olivier Guyon examines the possibility of finding other planets within astronomical numbers, some potentially rife with life. [6:21]

Lake Maracaibo is the stormiest place on the planet. Thunderstorms rage above this massive body of water for up to 200 days of the year, with each ear-splitting event lasting for several hours. Graeme Anderson lists the factors that...

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.

An explanation of the effect that the tides have on the Earth's rotation.

Review celestial bodies using this study guide.

The global impact of decades of environmental pollution is described and the implications this has for the future survival of life on our planet. (Updated: January 26, 2012)

The ArchaeoGlobe Project assessed knowledge on human land use over the past 10,000 years, through the contributions of more than 200 archaeologists. It concluded that, by 3,000 years ago, most of Earth was already transformed by...

Young scholars learn about the distance and relative size of the rest of the planets compared to the Earth and Sun. The lesson plan includes an assessment and extension activities.

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.

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,...

Was there ever life on another planet? Could there be life on another planet again? What makes the Earth support life? This article investigates these questions in depth.

The morning alarm rings. You take a hot shower, brew up a cup of coffee, read a bit from the morning newspaper and hop in the car to get to work on time. Have you ever stopped to consider the total environmental impact involved in each...

As far back as Ancient Greece, people have dreamed about living in space. This resource describes how space station science fiction of the past led to the development of today's space stations.

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.

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.