RESUMEN • Los alumnos experimentan una gran diversidad de emociones en el ámbito académico. Estas emociones y el aprendizaje se condicionan recíprocamente, lo que sugiere que el resultado del aprendizaje que perdura desde etapas educativas previas podría estar relacionado con las emociones experimentadas entonces. Para comprobarlo, en este trabajo se comparan los resultados de aprendizaje de Biología que perduran desde la Educación Secundaria con el recuerdo de algunas emociones experimentadas durante dicha etapa, en dos contextos educativos, en una muestra de 152 futuros maestros. Los resultados indican que existe una asociación significativa entre ese recuerdo y el aprendizaje de conceptos biológicos adquiridos en Secundaria. PALABRAS CLAVE: Emociones académicas; Aprendizaje duradero; Cuestionario autoinforme; Biología. ABSTRACT • The classroom is an emotional place. There is virtually no major human emotion which is not experienced in academic settings. Emotional state and learning influence each other, suggesting that a long-lasting association may be maintained. To assess this possibility, this contribution explores the association between biology learning outcomes, perpetuated from Secondary Education, and past emotions experienced at this stage (in two different academic settings) by a sample of 152 pre-service teachers. Correlation analysis supports a significant relationship between past emotions and longlasting learning outcomes of key Biology concepts acquired during Secondary education.

Magnetic field levels were studied in an urban area--the city of Cáceres (Spain). The study included systematic spot measurements throughout the city, an analysis of the temporal variation of the magnetic field, and the incorporation of the data into a geographic information system. The levels detected were at most 7.3% of the ICNIRP reference levels, and the highest fields were found in the oldest neighborhoods. Considered overall, the ELF magnetic flux density levels determined in the present study were between those found in residential and in working environments. Knowledge of the levels of such fields in urban areas is therefore fundamental in evaluating the population's overall exposure, especially for people who work outdoors.