« A Clever and Efficient Solar-Powered LED Lantern | Main | Thermodynamically Sound Money: The Physics of Bitcoin »
Monday, February 8, 2021
CONTEXT: Coming: The High Frontier—Documentary on Gerard K. O'Neill and Space Colonies
Here's my review from when I last re-read Prof. O'Neill's book in 2013: https://t.co/njio1LYxgd https://t.co/GxUu0rp1a8
— John Walker (@Fourmilab) February 8, 2021
Posted at February 8, 2021 19:30