Question sent by COCO BROSS (Buenos Aires). JOSEP ROS answers: Even though this is a widespread idea, the hemisphere in which the sink is does not univocally determine the direction of the

Question sent by ROCÍO ROS (València). LYDIA GIMÉNEZ-LLORT answers: Even though it is a feature all vertebrates share —from the fetus stage to old age—, and in spite of the curiosity this

Question sent by CRISTÓBAL HERRERO (Màlaga). SERGIO MONTAGUD answers: This is a very interesting question. However, in spite of how fascinating its answer may be, I think this question brings about another

Question sent by Tomàs Ferrer (Castelló). LUIS TORRES answers: We have evidence of wine consumption, especially red wine, preventing us from suffering coronary heart diseases or even preventing cancer, since 1992.

Eating yogurt every now and then is healthy due to the lactic ferments that help our bacterial flora, especially when they are alive. But, don't these lactic ferments die in

The pain women feel when giving birth is a very intense one when compared to the pain females from other species feel. Why is this so? Question sent by ENRIC CABRERA

Conspiracy theories claim that the HIV was manufactured in a laboratory

Question sent by RAQUEL RUBIO (València). EDUARDO MARTÍNEZ TAMAYO answers: The burning sensation we feel when we touch some objects at low temperatures, and also the damages produced, are very similar to

Question sent by ALONSO SÁNCHEZ POLO. PAU CARAZO answers: Until the onset of puberty, when feminine hormone release triggers the development of breasts in women, the development of mammary glands happens

Question sent by JOSEP MONFORT (Castellón). ALBERTO MARTÍNEZ-ORTÍ answers: The formation of these clusters, sometimes formed with many specimina, also called "grappes", is a strategy land snails use to fight the

Question sent by REMEI CALABUIG (Albaida, Valencia). EDUARDO MARTÍNEZ answers: The burning sensation is a sensory reaction to a process of heat transfer from a heat source —whether a piece of

Question sent by NURIA MARCO (Valencia). ESTER DESFILIS answers: Although it may seem strange, fish can smell and, actually, they have a very good sense of smell. Many people think that

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