July 31, 2026
83,404
5,019
1,231
7.49%
Every word spoken in this episode is indexed. Type any phrase to jump straight to the moment it was said.
Type any word or phrase that may have been spoken. Click a result to seek the player to that exact moment.
Try a name, a topic, or a quoted line
Episode Timeline
Every episode in order around the one you’re watching — click any card and the page flips straight to it.
26:37Now PlayingUse code coolworlds at to get an exclusive 60% off an annual Incogni plan.
The "Great Filter" is a pivotal idea in astrobiology. It may very well explain the Fermi Paradox. Today we explore what it is, some candidates for it's cause, and the shocking consequences it implies with respect to our future detections.
Written & presented by David Kipping, edited by Jorge Casas
→ Support our research
→ Get merch
→ Check out our podcast: www.youtube.com/@CoolWorldsPodcast
THANK-YOU to D. Aron, B. Bueche, S. Lee, G. Bylinsky, M. Czirr, C. Fitzgerald, S. Shardool, B. Gaalen, G. Metts, D. Hoffman, M. Simmons, C. Frederick, H. Schiff, D. Stewart, M. Sanford, R. Borbidge, S. Patterson, M. Farabee, M. Elliott, A. Kochkov, B. Cartmell, G. Fullwood, C. Seay, Z. Danielson, J. Bergman, D. Lee, P. Stevenson, S. Brownlee, B. Reese, B. Daniluk, N. Offor, T. Ford, R. Williams, I. Williams, L. Cunningham, N. Haan, K. Howard, C. Bottaccini, C. Souter, A. Nimmerjahn, W. Ruf, G. Belsak, J. Alley, M. OBrien, T. Zajonc, S. Lewis, J. Canning, R. Provost, T. Inc, J. Matters, B. Devermont, B. Kingston, A. Huch, R. Chaffee, M. Hedlund, M. Everest, M. Gillette, V. Popovski, J. Armstrong, D. Daughaday, N. Corwin, S. Murray, C. Fitzsimmons, T. Donkin, C. Kennedy, M. Adler, L. MacFarlane, B. Langley, E. Garland, S. Vystoropskyi, J. Bryant, D. Ervin, M. Morrow, B. McMillan, J. Bassnett, T. Edris, J. Kruger, C. Hansen, L. Schreiner, D. Smith, R. Muriuki, P. Borisoff, B. Ross-Lee, A. Schoen, L. Deacon, I. Venzor, P. Johnston, W. Smith, J. Murphy, R. Lovely & J. Rockett.
MUSIC
Licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License () or with permission from the artist. You can see all of our past music here
CHAPTERS
#GreatFilter #AreWeAlone #CoolWorlds
Sentinel Indexing in Progress
Metadata and chapters are available. Claim extraction for this episode is pending.
All video content is delivered via YouTube embedded players in accordance with the YouTube Terms of Service. Sentinel provides research tools that promote discovery and accountability across political media.