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Guest: Dennis Chamberland. Topics: Atlantica Expedition, space analogs under the ocean. Please note that you are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. We welcomed Dennis Chamberland, Expedition Leader and Aquanaut to the show. For more information, please visit the Atlantica Expedition website at www.underseacolony.com. We started our first segment with a mission overview of the Atlantica program including a discussion on the Atlantica One mission to be followed by the Atlantica Two mission. Mr. Chamberland offered us a comprehensive discussion of these two projects throughout our program so our discussion was not limited to the introduction and overview. We also talked about the acquisition and use of private submarines. During this segment, not only did we go over the criteria for site placement for both undersea habitats and crews, we talked about the gulfstream and we even fielded a question from a listener who wanted to know if residency in Atlantica Two would be exempt from state income tax obligations. As we started the second segment, we spent more time discussing the gulfstream as a source of energy for the habitat but and for marketing power onshore to Florida. Listeners asked our guest about other undersea habitats around the world and we asked Mr. Chamberland to compare Atlantica with the earlier Tucson Biosphere 1 and 2 experiments. At this point, we started talking comparisons between space and undersea habitats and requirements so don't miss this discussion. As you will hear, there are lots of points of comparison but also significant differences, including radiation, gravity and family separation issues. We talked about medical and life support issues as well as tourism relating to the Atlantica Two habitat which is designed to be a permanent undersea colony. Other topics discussed included solar power, the economic rational for the habitats, and even questions about what happens to the habitat with strong ocean waves, even a tsunami. Since Atlantica Two is being designed for families, I asked about pets going with the families. You might be surprised by this discussion. Informed consent and risks came up and we learned that many of the participants and those involved in the Atlantica Expedition are also working or involved in various aspect of the space industry. The connections and links with space and undersea habitats are obvious and strong. As for takeaways as we ended this discussion, Dennis suggested we keep in mind that most exploration projects in history have largely been private, not just public. For questions and comments, please post them on the blog URL above. You can also email Dennis Chamberland at email@example.com.