SciencePrehistoric (Younger Dryas, ~12,900-11,700 years ago)global/North Americahigh confidence

Some elongated carbon spherules from Younger Dryas-era soils resemble modern fecal pellets produced by insects.

Notes on verification

Confirmed by peer-reviewed literature (Scott et al. 2010, GRL) and corroborated by multiple independent science news outlets reporting on the same AGU findings, plus a separate critique paper on the Younger Dryas impact hypothesis. [tier=gold indep_score=0.838 clusters=4 claim_tier=notable]

Sources

Some elongated carbon spherules from Younger Dryas-era so… · DeepInquiry