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1
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Stupid Aliens
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2
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First Contact
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3
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Weather Control and Geoengineering
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4
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Crazy Aliens
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5
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Interstellar Travel Challenges
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6
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Life Extension
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7
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Cryptic Aliens
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8
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Interstellar Highways
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9
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Upward Bound: Getting Into Space
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10
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Upward Bound: Space Elevators
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11
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Quantum Computing
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12
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Upward Bound: Skyhooks
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13
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Life Support
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14
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Upward Bound: Mass Drivers
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15
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Dead Aliens
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16
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Reusable Rockets & Metallic Hydrogen
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17
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Cyborgs
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18
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The Nuclear Option
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19
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Infinite Improbability Issues
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20
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Industrializing the Moon
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21
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Psychohistory
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22
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Launch Loops
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23
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Construction Tips from a Type 2 Engineer - Part 1
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24
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Tips from Kardashev 2 Engineers, part 2
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25
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Upward Bound: Space Towers
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26
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Fermi Paradox Great Filters: Space and Time
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27
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Orbital Rings
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28
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Megastructures 1.1: Dyson Spheres
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29
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Civilizations at the End of Time: Iron Stars
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30
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Fermi Paradox Great Filters: Rare Earth
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31
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Force Fields
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32
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Hidden Aliens
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33
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Quiet Revolution: Technologies that will change the World
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34
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Outward Bound: Colonizing Mars
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35
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Fermi Paradox Great Filters: Rare Intelligence
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36
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Interplanetary Warfare
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37
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Outward Bound: Colonizing Venus
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38
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Megastructures: Ringworlds
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39
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Smug Aliens
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40
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Uplifting Animal & Aliens, Part 1 of 2
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41
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Uplifting: Animals and Aliens Part 2 of 2
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42
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Androids
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43
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Outward Bound: Colonizing Titan
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44
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Mind Augmentation
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45
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Digital Death
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46
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Outward Bound: Interplanetary Trade
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47
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The Cosmic Ocean
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48
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Mega Earths
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49
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Outward Bound: Colonizing Jupiter
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50
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Machine Rebellion
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51
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Hive Minds
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52
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Outward Bound: Colonizing the Oort Cloud
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53
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Interstellar Empires
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54
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Intergalactic Colonization
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