carl-sagan
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Nuclear winter theory reassessed in the Wall Street Journal |
|
0 | 969 | September 8, 2020 |
| Fermi's Paradox applied to the absence of time travelers |
|
12 | 2069 | July 22, 2010 |
| Carl Sagan on the shared molecular kinship of humans and trees |
|
3 | 1079 | June 22, 2009 |
| Carl Sagan's skepticism toward time travel and aliens |
|
5 | 1038 | July 15, 2006 |
| Discipline, a novel blending cosmology and Taoism |
|
0 | 310 | August 14, 2001 |
| PBS Nova previews a 1999 time travel television episode |
|
2 | 314 | October 4, 1999 |