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Activity
NASA

Nasa: Building a Winogradsky Column [Pdf]

For Teachers 5th - 8th
NASA teacher's guide to building a Winogradsky Column to study microorganisms. When this guide was first released, students were invited to participate in two webcasts with NASA scientists. The conversations from those webcasts are...
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Article
American Institute of Biological Sciences

Action Bioscience: Life From Space: An Emerging Paradigm

For Students 9th - 10th
Recognize that some people believe that life on Earth came from outer space. Learn about the support for these ideas and what could happen if life would continue to arrive from space.
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Activity
PBS

Pbs: Origins: Where Are the Aliens?

For Teachers 9th - 10th
Was there ever life on another planet? Could there be life on another planet again? What makes the Earth support life? This article investigates these questions in depth.