How Many Earths Are Needed to Support a Mole of Moles?

Naomi Lester, Maddie Coles


A mole is a unit for the amount of a substance so that one mole contains exactly 6.02214076 x 1023 particles, but a mole is also a furry mammal that lives underground and eats earthworms. As with all animals, they require sufficient space to live comfortably and to grow, and they have a preferred habitat. This paper explores how much space on the Earth is suitable for moles to inhabit and estimates how many Earths would be required to support a mole of moles.


Moles; Biology; Wildlife and habitat; Talpa europaea

Full Text:



Milton, M.J.T. (2011) A new definition for the mole based on the Avogadro constant: a journey from physics to chemistry. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 369(1953), pp.3993-4003. DOI: 10.1098/rsta.2011.0176

Bureau International des Poids et Mesures (2019) SI base unit: mole (mol). [Online] Available at: [Accessed 7th March 2023].

Giunta, C.J. (2015) The Mole and Amount of Substance in Chemistry and Education: Beyond Official Definitions. Journal of Chemical Education, 92(10), pp.1593-1597. DOI: 10.1021/ed5007376

Fellowes, M.D. Acquaah-Harrison, K. Angeoletto, F. Santos, J.W. da Silva Leandro, D. Rocha, E.A. Pirie, T.J. & Thomas, R.L. (2020) Map-a-mole: Greenspace area influences the presence and abundance of the European mole Talpa europaea in urban habitats. Animals, 10(6), p.1097. DOI: 10.3390/ani10061097

Zurawska-Seta, E. & Barczak, T. (2012) The influence of field margins on the presence and spatial distribution of the European mole Talpa europaea L. within the agricultural landscape of northern Poland. Archives of Biological Sciences, 64(3), pp.971-980. DOI: 10.2298/ABS1203971Z

Macdonald, D.W. Atkinson, R.P.D. & Blanchard, G. (1997) Spatial and temporal patterns in the activity of European moles. Oecologia. 109(1). pp. 88 – 97. Available at: [Accessed 7th March 2023].

Descouens, D. (2012) Talpa europaea MHNT. [Photograph]. Muséum de Toulouse collection.

Bond, W.J. Woodward, F.I. & Midgley, G.F. (2005) The global distribution of ecosystems in a world without fire. New Phytologist. 165(2). pp. 525 – 538. DOI: 10.1111/j.1469-8137.2004.01252.x

Ritchie, H. & Roser, M. (2021) Forests and Deforestation, OurWorldInData. [Online]. Available at: [Accessed 7th March 2023]

The British Mole Catchers (2015) About Moles, The British Mole Catchers Register. [Online] Available at: [Accessed 7th March 2023].

LePan, N. (2021) Visualizing Countries by Share of Earth’s Surface, Visual Capitalist. [Online] Available at: [Accessed 7th March 2023].

Maxwell, S. (2022) Woodland Statistics, Forest Research. [Online] Available at: [Accessed 7th March 2023]


  • There are currently no refbacks.
We use both functional and performance cookies to improve visitor experience. Continue browsing if you are happy to accept cookies. Please see our Privacy Policy for more information.