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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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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Muchos estudios han demostrado el potencial del cambio climático global para mermar los suministros de alimentos. Pero estos estudios, en su mayor parte, ignoran las interacciones entre el aumento de temperatura y la contaminación del aire, específicamente la contaminación por ozono que se sabe que daña los cultivos. Un nuevo estudio con la participación de investigadores del MIT demuestra que estas interacciones pueden ser muy significativas, lo que sugiere que las...
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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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Bumphead parrotfish are noisy feeders. They break off large branches of corals using their powerful beaks, grind them up in their bodies to extract nutrients, and expel the undigested material in large cloudy plumes of feces. Their voracious feeding is, however, not just a loud, messy affair. During the course of their feeding, bumphead parrotfish (Bolbometopon muricatum) also change the coral reef ecosystem in numerous ways, a new study published in Conservation Biology has found.
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A menos que su piel tenga 30 centímetros de espesor, nadar y surfear en el Océano Pacífico durante horas requiere de un traje de neopreno para mantenerse cálido y cómodo. Esa comodidad, sin embargo, viene con un precio, ya que la gran mayoría de los trajes están...
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