Cuidado fans de George Lucas, una estrella de la muerte puede estar en nuestro horizonte y sólo tendríamos que mirar a nuestro vecino estelar más próximo: el Sol. Según el Sr. Ashley Dale de la Universidad de Bristol, las “súper tormentas” solares plantean una amenaza inminente a la tierra mediante la desactivación de la electricidad y los sistemas de comunicación, o pudiera ser aún peor. Por lo tanto, el cuerpo celeste que ilumina el mundo puede ser el responsable de enviarnos a la oscuridad. En la edición de este mes de PhysicsWorld, el Sr. Dale escribe: “Sin energía no se podría poner gasolina a los coches, ni se pudiera obtener dinero de los cajeros automáticos o pagar en línea. Los sistemas de agua y de alcantarillado se verían afectados también, es decir, lo que permitiría que las epidemias se propagaran rápidamente en áreas urbanizadas, haciendo que regresaran enfermedades que...
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The fate of oil during the first day after an accidental oil spill is still poorly understood, with researchers often arriving on the scene only after several days. New findings from a field experiment carried out in the North Sea provide valuable insight The immediate aftermath of an oil spill The fate of oil during the first day after an accidental oil spill is still poorly understood, with researchers often arriving on the scene only after several days. New findings from a field experiment carried out in the North Sea provide valuable insight that could help shape the emergency response in the immediate wake of disasters.
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Cuando llueve, ¿a dónde va el agua? Bueno, una gran cantidad de agua de lluvia canalizará su camino fuera de las carreteras y las superficies impermeables y se irá hacia el drenaje pluvial. Otra ruta podría ser directamente en los ríos y lagos. O bien, el agua de lluvia puede ser que sea absorbida por el suelo y a recargar acuíferos. ¿Pero qué tan profunda se infiltra esta agua de lluvia? Según una nueva investigación, el agua de lluvia puede...
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Honey bees are known for their fascinating social structure. A honey bee colony is in fact a well-organized machine, running on good communication, defense and division of labor. As social insects, honey bees have also been shown the communicate to their fellow foragers, a dance to tell their counterparts where food is located. But listening to other bees isn’t always the name of the game. Sometimes the honeybee just wants to do its own thing.
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Many studies have shown that personal care products, like toothpaste, shampoo, and other drugs that we use and get into our wastewater have negatively affected fish populations, disrupting their endocrine systems. But can there be any positive effects? A new study shows that one antianxiety drug that made its way into a lake in Sweden has in fact, positively affected the Eurasian perch population, making them bolder, less social, and more active than unexposed fish, ultimately reducing their mortality rates.
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Even when the sea looks clean, its surface can be flecked with tiny fragments of paint and fiberglass. That's the finding from a study that looked for plastic pollution in the uppermost millimeter of ocean. The microscopic fragments come from the decks and hulls of boats, and they could pose a threat to tiny creatures called zooplankton, which are an important part of the marine food web. The discovery is "continuing to open our eyes to how many small synthetic particles are in the environment," says Kara Law, an oceanographer who studies plastic pollution at the Sea Education Association in Woods Hole, Massachusetts, and wasn’t involved in the study.
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