Pbs Learning Media: Earth a New Wild: Ecosystem Explorer

Students learn how elephants engineer the ecosystem to benefit humans and nature. [5:10]

In this video, students learn about lemon sharks and how their grazing habits help keep mangrove ecosystems healthy. [3:57]

This video segment adapted from NASA's Goddard Space Flight Center explains how and where hurricanes develop. Learn how El Nino events alter the course of atmospheric circulation. Includes background reading material and discussion...

Students learn how various kinds of data and information can be gathered to create a biodiversity timeline that serves as evidence of changes in a population of a species.

This video segment adapted from NASA's Goddard Space Flight Center details some of El Nino's far-reaching effects on both marine life and humans. [2:44]

Scientists study ice sheets because they influence weather and climate, playing a role in atmospheric and ocean circulation. Ice sheets can also have huge impacts on global sea levels because they store so much water. Explore this...

The paths that water can take through Earth's systems are many and complex. Examine the following diagram from NASA depicting the water cycle. Studying the water cycle is important because changes in the water cycle affect all parts of...

Students learn about the giant impact hypothesis for the Moon's formation, and how the Apollo Moon rocks have contributed to scientists' understanding of the Moon.

Are three seemingly separate volcanoes in Iceland actually connected to each other? For the first time, scientists can study a volcano from the inside and find out that these volcanoes are actually connected. Find out how in this video...

Discover why the gray wolves were important to Yellowstone National Park before they become extinct in that area. Find out how gray wolves were reintroduced back into this area. [5:19]