NASA and the U.S. Forest Service are surveying the forests of Interior Alaska. The airborne study using an advanced instrument will create a 3D map of the forest composition. This will enable scientists to see patterns of fire...

A soggy 2013 spring, with near record rainfall in some areas, has led to flood warnings in Iowa, Illinois, Missouri, Arkansas and Oklahoma. With the floodwaters come questions as millions brace for the next wave of...

Tiny particles suspended in the air, known as aerosols, can darken snow and ice causing it to absorb more of the sun’s energy. But until recently, scientists rarely considered the effect of all three major types of...

The NOAA-N Prime satellite is slated for launch by NASA on February 4th, 2009. Operated by NOAA, N Prime will be the last in the Television Infrared Observation Satellite Series (TIROS) that have been observing Earth’s weather and...

A combination of lightning, drought and human activity caused fires to scorch more than one-third of Yellowstone National Park in the summer of 1988. Within a year, burn scars cast a sharp outline on the 793,880 acres affected...

Has pollen got you sneezing? Wondering what's causing that mysterious afternoon haze? How do you find out what's in the air you are breathing? For the thousands of people who visit the University of Maryland Baltimore County's "Smog...

This video is answering the question of what causes forest fires.

This video explores the issue of forest fires caused by the palm oil industry in Indonesia. It examines the different perspectives on who is responsible for these fires, with the focus on small-scale farmers who resort to slash and burn...

Is the frequency of extreme weather events a sign that global warming is gaining pace and exceeding predictions?



"Now, direct evidence of the footprint or the fingerprint of global warming: we're seeing more frequent,...

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 video explains the concept of global climate change and its potential effects on the Earth. It discusses the scientific consensus that the Earth's temperature is rising due to the emission of greenhouse gases, the resulting melting...

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.

In this video, the teacher guides students on how to revise their writing by organizing ideas into paragraphs. They discuss the importance of topic sentences, indenting, and keeping related information together. The teacher provides...

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 Effects of Disturbances on Ecosystems: This Clip gives examples of how disturbances - both large and small - affect ecosystems and their reestablishment.