Artifacts 14
Every copy this mystery rests on, each with its own key and its distance from the original.
Photo1 step from object
Mario Pino et al. · CC BY 4.0
Dataset2 steps from object
Richard Alley (NOAA World Data Service for Paleoclimatology) · public-domain
Document2 steps from object
Richard Firestone and colleagues · publisher
Photo1 step from object
Ammodramus (Wikimedia Commons) · CC0
Document2 steps from object
James Kennett and colleagues · CC-BY-4.0
Photo2 steps from object
Moore et al. 2020, figure 2 · CC BY-SA 4.0 (as tagged on Commons; the source figure is CC BY 4.0)
Photo2 steps from object
NASA Goddard · Public domain (US government work)
Document2 steps from object
Gavin Kenny and colleagues · CC-BY-4.0
Photo2 steps from object
Andrew M. T. Moore and colleagues · CC BY-SA 4.0 (as tagged on Commons; the source figure is CC BY 4.0)
Photo2 steps from object
NASA/Cindy Starr · Public domain (US government work)