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Radioactivity is everywhere around us, from the atmosphere to your synthetic clothing, but why doesn't it affect us, and how did discovering it change our lives? In this video, we explain how this spontaneous emission of radiation occurs and why its discovery was one of the most important events in science. And it's all thanks to Marie Curie, who would end up receiving the Nobel Prize in Physics alongside her husband Pierre Curie and Henri Becquerel in 1903. ● Presentation: Jorge Pérez Valery ● Script: Camilla Costa and Carol Olona ● Design, animation and sound: Kako Abraham ● Editor: Carol Olona Subscribe to the channel here ???? https://bbc.in/2UHHVsu ----------------------------------- This is the official BBC channel in Spanish. If you are interested in international current affairs and are looking for impartial coverage, you are in the best place. Here you will find videos on news and current issues in different formats, from explanatory videos and documentaries to interviews. Thank you for visiting us. See you! ???? Facebook https://bbc.in/2BxEUCt ???? Instagram https://bbc.in/2N3p7AF ???? Twitter https://bbc.in/32F72iZ #BBCMundo