<div dir="ltr">Or at the very least, build orbital habitats: most of the benefits of off-Earth colonization, much lower cost and easier than transforming other planets.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jan 17, 2023 at 7:52 AM Brent Allsop via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><br><div>I think this is all absurd and clueless thinking. We'll be able to re-engineer our bodies, and all life, long before we are traveling to other stars. Helloooo.</div><div><br></div><div>We shouldn't be going to space, mars, and even underwater, till we can do so without space suits (and till we have multiple restorable backups of ourselves...).</div><div><br></div><div><br></div><div><br></div><div> </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jan 17, 2023 at 8:39 AM Adrian Tymes via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org" target="_blank">extropy-chat@lists.extropy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Transplanting a biosphere to another world is possible. Much sci-fi speculates about possible parallel evolution of life on other worlds that would be compatible with Earth life, too.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jan 16, 2023 at 6:46 AM BillK via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org" target="_blank">extropy-chat@lists.extropy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">There's no Planet B.<br>
The scientific evidence is clear: the only celestial body that can<br>
support us is the one we evolved with. Here’s why.<br>
Arwen E Nicholson, Raphaëlle D Haywood<br>
<br>
<<a href="https://aeon.co/essays/we-will-never-be-able-to-live-on-another-planet-heres-why" rel="noreferrer" target="_blank">https://aeon.co/essays/we-will-never-be-able-to-live-on-another-planet-heres-why</a>><br>
Quote:<br>
Given all our technological advances, it’s tempting to believe we are<br>
approaching an age of interplanetary colonisation. But can we really<br>
leave Earth and all our worries behind? No. All these stories are<br>
missing what makes a planet habitable to us. What Earth-like means in<br>
astronomy textbooks and what it means to someone considering their<br>
survival prospects on a distant world are two vastly different things.<br>
We don’t just need a planet roughly the same size and temperature as<br>
Earth; we need a planet that spent billions of years evolving with us.<br>
We depend completely on the billions of other living organisms that<br>
make up Earth’s biosphere. Without them, we cannot survive.<br>
Astronomical observations and Earth’s geological record are clear: the<br>
only planet that can support us is the one we evolved with. There is<br>
no plan B. There is no planet B.<br>
-----------<br>
<br>
The article is making the point that humanity is not self-sufficient.<br>
Humans require all the resources provided by the earth.<br>
<br>
BillK<br>
<br>
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