Our planet might seem like it never changes, but that’s hardly the case.
We walk on it, see it blowing in the wind, grow our food in it. Soil! But what is it, really?
Starting with our planet, which is “just right” for life as we know it, take a journey through the solar system and outward to the stars.
Landforms around the world provide a dramatic backdrop for examining how weathering, erosion, and deposition shape Earth’s surface features.
The Sun is the main source of energy used by nearly all living things on Earth. In the blink of an eye, the chameleon’s sticky tongue snags the dragonfly.
A “problem” might seem like something bad is about to happen, but often a problem is a puzzle waiting for a solution.
Explore the role of energy in changing matter from solids into liquids or gases and back again.
Get a bird's-eye view of Earth's biomes and the living and nonliving interactions within their characteristic ecosystems.