Question sent by IRENE MAYOR SÁNCHEZ (La Vila Joiosa). DANIEL CLIMENT and ESTEVE SOLER answer: Tannins, complex substances inside the group of polyphenols that coagulate certain proteins, are responsible for the

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Question sent by JOSE GALÁN (Alacant). EDUARDO ROS answers: «Clouds are not spheres, mountains are not cones, coastlines are not circles, and bark is not smooth, nor does lightning travel a

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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

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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

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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

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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.

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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

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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

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Conspiracy theories claim that the HIV was manufactured in a laboratory

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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

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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

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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

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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

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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

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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

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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

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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

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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

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