Ants use soil physics to excavate metre-long tunnels
that last decades. By Matthew Sparkes, New Scientist, August 23, 2021
[www.newscientist.com]

The paper is:

Robert Buarque de Macedo, Edward Andò, Shilpa Joy,
Gioacchino Viggiani, Raj Kumar Pal, Joseph Parker, José
E. Andrade, 2021, Unearthing real-time 3D ant tunneling
mechanics. Proceedings of the National Academy of Sciences
Sep 2021, 118 (36) e2102267118; DOI: 10.1073/pnas.2102267118
[www.pnas.org]

Yours,

Paul H.

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