Dr Ciencias, Mtro Biología Experimental, Lic Biología UAM, Dipl Educación CIPAE, Dipl Aprendizaje con Tecnologías Digitales MIT, Dipl Riesgo Ambiental INE
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727 days ago
Science chat of Carl #Sagan with elementary school kids in Cosmos' Backbone of Night Chapter. #SaganDay
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Scientist, science writer & popularizer, teacher, activist. #CarlSaganDay
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alvagraul 362 days ago
Scientist, science writer & popularizer, teacher, activist. #CarlSaganDay