Joe Rogan Experience #2571 - Jimmy Carr · Aired Oct 28, 2026
Claim summary · not a verbatim quotation
Impact cooling made all dinosaur hatchlings female, killing them; crocodiles survived because they lack temperature-dependent sex determination.
The finding
What the evidence shows
Carr says asteroid cooling made dinosaurs all female and that crocodiles survived because they lack temperature-dependent sex determination. NOAA explicitly includes crocodiles among animals with temperature-dependent sex determination. Modern impact-winter research models dust, cooling and photosynthesis collapse, not a demonstrated dinosaur-wide switch to female hatchlings. Joe responds that it makes sense; Carr is the original speaker.
Read the supporting source · oceanservice.noaa.gov ↗Quick answer & review status
Quick answer
Is it true that Impact cooling made all dinosaur hatchlings female, killing them; crocodiles survived because they lack temperature-dependent sex determination?
Partly. The claim stretches what the evidence shows. Carr says asteroid cooling made dinosaurs all female and that crocodiles survived because they lack temperature-dependent sex determination. NOAA explicitly includes crocodiles among animals with temperature-dependent sex determination. It was said on Joe Rogan Experience #2571 - Jimmy Carr, aired Oct 28, 2026, at 21:02. We haven't independently confirmed who said it. The supporting source is oceanservice.noaa.gov, linked below.
The context belongs here.
No separately verified on-air correction is recorded for this check. That is not a claim that nobody corrected it.
- Attribution
- Not independently confirmed in this record
- Editorial context review
- Not recorded; generated finding
- Coverage
- One selected claim from the episode
Revisions to this check
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