Question sent by JORDI PORTAVELLA (La Garriga, Barcelona). FERNANDO SAPIÑA answers: Dear Jordi, Milk is a fluid segregated by the female mammary glands of the mammals. It is the only food

By the window of a country house I found two celeoptera performing an incomprehensible dance for me: the female was licking the tip of the male's elytra  (the picture shows

Taking into account that each day of the week is dedicated to a wandering star easily visible, why is the order Moon - Mars - Mercury - Jupiter - Venus

Question sent by ALBA CERVERÓ (Valencia). ISABEL MATEU answers: Air carnations belong to the botanic genus of Tillandsia from the family of Bromiliceae, to which the tropical pineapple also belongs, that