Ancient eggshells and a hoard of crystals reveal early human innovation and ritual in the Kalahari
Jayne Wilkins and Sechaba Maape, The Conversation, March 31, 2021,
[theconversation.com]

The paper is:

Wilkins, J., Schoville, B.J., Pickering, R., Gliganic, L., Collins, B., Brown, K.S., von der Meden, J.,
Khumalo, W., Meyer, M.C., Maape, S. and Blackwood, A.F., 2021. Innovative Homo sapiens
behaviours 105,000 years ago in a wetter Kalahari. Nature, 592(7853), pp.248-252.

and

Willoughby, P.R., 2021. Early Africans living inland collected unusual objects. Nature, 592(7853),
pp.193-193.

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)