A simple calculation was described in the caption to the photo you see here, when that photo appeared in the report “The U.S. empire was built on bird dung” by Sunjata Gupta, in the January 2025 issue of Science News. The caption says: “From roughly 1845 to 1880, prospectors in Peru (shown here loading up […]
A new study reports progress on an old chestnut of a question: “What Colour is Penguin Guano?” W.G. Rees, J.A. Brown, P.T. Fretwell, and P.N. Trathan, Antarctic Science, vol. 29, no. 5, October 2017 , pp. 417-425. (Thanks to Tom Gill for bringing this to our attention.) The authors, at the University of Cambridge and […]
A new paper in the Journal of Threatened Taxa, Vol 7, No 6 (2015) asks, and answers the question: ‘Harvesting the guano of insectivorous bats: is it sustainable?’ Investigators Thet Thet and Khin Mya Mya focused their studies on one cave, in a complex of four caves on Sudaung mountain, Sintkaing Township, Mandalay Region (21044.941’N […]
