New research from the U.S. Geological Survey has found microscopic plastic fibers present in rainwater from Rocky Mountain National Park in Colorado.

Nitrogen makes up 78% of the air, however neither plants nor animals can take nitrogen directly from the air because nitrogen is so unreactive. The nitrogen cycles shows the movement of nitrogen through the environment. Nitrogen is...

In this video learn about hard and soft water, the differences between these and where to find examples in everyday life.

How do farmers conserve water? Are machines used to harvest fruit? How can we become a part of sustainable agriculture?<br/>
Sustainable Farming, Part 2

This program explores the role of water erosion from its initial impact to deposition. Students will come to understand that starting with impact of raindrops, water erodes the landscape by transporting rock and soil. By watching this...

This nugget shows how to estimate quantity of liquids in terms of litres and compare capacity in terms of half, twice and three times.

This program explores the geography, history, and some important cultural features of the Pacific Region of the United States. The individual states of California, Oregon, Washington, Alaska and Hawaii are presented in detail.

This program explores the geography, history, and some important cultural features of the Pacific Region of the United States. The individual states of California, Oregon, Washington, Alaska and Hawaii are presented in detail.

This program explores the geography, history, and some important cultural features of the Pacific Region of the United States. The individual states of California, Oregon, Washington, Alaska and Hawaii are presented in detail.

This program explores the geography, history, and some important cultural features of the Pacific Region of the United States. The individual states of California, Oregon, Washington, Alaska and Hawaii are presented in detail.

This program explores the geography, history, and some important cultural features of the Pacific Region of the United States. The individual states of California, Oregon, Washington, Alaska and Hawaii are presented in detail.

The Water Cycle part 1. Students will be able to do the following:

- Define the water cycle as the continual movement of water between earth and the
air.
- Explain that the water cycle consists of three processes:...

This program explores the geography, history, and some important cultural features of the Pacific Region of the United States. The individual states of California, Oregon, Washington, Alaska and Hawaii are presented in detail.