Obtener Adobe Flash Player

"The case of the three species of protozoan (I forget the names) which apparently select
differently sized grains of sand, etc., is almost the most wonderful fact I ever heard of.
One cannot believe that they have mental power enough to do so, and how
any structure or kind of viscidity can lead to this result passes all understanding."

Charles Darwin, letter to W.B. Carpenter, 1872


Marta Pol, Gerard Prat, Alba Romaguera, Elisa Ruiz i Raúl Sánchez
©2012 Universitat Pompeu Fabra. All Rights Reserved.