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Some scholars propose the establishment on Earth of one or more self-sufficient, remote, permanently occupied settlements specifically created for the purpose of surviving a global disaster. [ 39 ] [ 40 ] [ 41 ] Economist Robin Hanson argues that a refuge permanently housing as few as 100 people would significantly improve the chances of human ...
About 1 in 5 Sun-like stars [a] have an "Earth-sized" [b] planet in the habitable zone, [c] with the nearest expected to be within 12 light-years distance from Earth. [ 110 ] [ 111 ] Assuming 200 billion stars in the Milky Way, [ d ] that would be 11 billion potentially habitable Earth-sized planets in the Milky Way, rising to 40 billion if red ...
[109] [110] [111] A 1997 assessment states that over a third of Earth's land has been modified by humans, that atmospheric carbon dioxide has increased around 30 percent, that humans are the dominant source of nitrogen fixation, that humans control most of the Earth's accessible surface fresh water, and that species extinction rates may be over ...
The impact of discovering life beyond earth. Cambridge University Press. ISBN 978-1-107-10998-8. Ashkenazi, Michael (2016). What We Know About Extraterrestrial Intelligence. Springer. ISBN 978-3-319-44455-0. Vakoch, Douglas (2013). Astrobiology, History, and Society — Life Beyond Earth and the Impact of Discovery. Springer. ISBN 978-3-642 ...
Fictionalized portrayals: They Live, V, Stargate, Star Trek, Worldwar, Gamehendge, etc. Tall, scaly humanoids. Reptilian humanoid beings date back at least as far as Ancient Egypt, with the crocodile-headed river god Sobek. The reptilian conspiracy theory has been advocated by David Icke. Rods [20] or skyfish
A group of scientists has devised a plan to safeguard Earth’s species in a cryogenic biorepository on the moon. ... a lunar biorepository would target the most at-risk species on Earth today ...
Tiny plastic particles have been found throughout the human body, but researchers say they’re just starting to understand the impact. When Jaime Ross, PhD, a neuroscientist and assistant ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 8 February 2025. Discrepancy of the lack of evidence for alien life despite its apparent likelihood This article is about the absence of clear evidence of extraterrestrial life. For a type of estimation problem, see Fermi problem. Enrico Fermi (Los Alamos 1945) The Fermi paradox is the discrepancy ...