This week we learn about pressure. Pressure has to be generated for Penguins to poo outside of thier nest. How much pressure? We know the answer!
Meyer-Rochow, V. B., & Gal, J. (2003). Pressures produced when penguins pooh?calculations on avian defaecation. Polar Biology, 27(1), 56–58. http://doi.org/10.1007/s00300–003–0563–3
