This is a bonus video. It is not required. The notes are not required. Can you watch it and take notes on it? Yes. Will there be two bonus questions on the test regarding this material? Yes. If you don't watch the video and get the questions wrong, will it count against you? No.

This video is about applying some of the basic principles that we explored in Unit 1: The Fundamentals of the Life Sciences and applying them to a very practical matter - the search for life beyond Earth. Scientists and government agencies spend actual time, effort, and money examining this question. Based on what we know about the basic characteristics of life, we can narrow our search to the most likely candidates and go to these places first.

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