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Young Voices for the Planet DVD in our online store includes 8 films where students speak out and take action on climate change.
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Looking for Life's Garbage

Most forms of life leave behind evidence that they are there. Plants help make oxygen and use up carbon dioxide. Some creatures help make nitrogen. People leave behind smog, television signals, and garbage.

Scientists find life by looking for the things that creatures leave behind. Io, Titan, and maybe Triton show some of the things that creatures make, including molecules of oxygen and nitrogen.

Most planets and moons do not have the common garbage which life forms leave behind. This means that life does not seem to live there.


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The Spring 2010 issue of The Earth Scientist, focuses on the ocean, including articles on polar research, coral reefs, ocean acidification, and climate. Includes a gorgeous full color poster!

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Traveling Nitrogen Classroom Activity Kit

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The Atmosphere of Triton

Triton is by far the largest moon of Neptune. It is slightly smaller than Earth's Moon. The surface of Triton is colder than the surface of any other planet or moon in our Solar System. It is so cold on...more

Can there be Life in the Environment of Jupiter?

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The possible discovery of Life on Mars

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Can there be Life in the Environment of Titan?

Titan's atmosphere is a lot like the Earth's, except that it is very cold, from -330 degrees to -290 degrees! Like the Earth, there is a lot of Nitrogen and other complex molecules. There also may be an...more

Autotrophs

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Coacervates

In the warm primordial ocean, aggregates of amino acids, proteins, and other hydrocarbons came together into a form called *coacervates*. Amino acids will spontaneously form coacervates in the same way...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA