Linking pages
- Beyond "Fermi's Paradox" XV: What is the Percolation Theory Hypothesis? - Universe Today https://www.universetoday.com/148088/beyond-fermis-paradox-xv-what-is-the-percolation-theory-hypothesis/ 77 comments
- Torchships - Atomic Rockets http://www.projectrho.com/public_html/rocket/torchships.php 19 comments
- A Radical But Possible Plan to Connect African Nations With Cargo Drones | WIRED http://www.wired.com/2014/09/cargo-drones-in-africa/ 0 comments