With Europe and the United States slow to ban the pesticides that science says is probably drastically harming our bee populations, could one of the world's most venomous spiders hold one solution to saving our pollinators?
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Even though daytime temperatures in the tropics of Mars can be about –20°C, a summer afternoon there might feel about the same as an average winter day in southern England or Minneapolis. That’s because there’s virtually no wind chill on the Red Planet, according to a new study—the first to give an accurate sense of what it might feel like to spend a day walking about on our celestial neighbor.
"I hadn't really thought about this before, but I'm not surprised," says Maurice Bluestein, a biomedical engineer and wind chill expert recently retired from Indiana University–Purdue University Indianapolis. The new findings, he says, "will be useful, as people planning to colonize Mars need to know what they’re getting themselves into."
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The U.S. Food and Drug Administration and the U.S. Environmental Protection Agency today issued updated draft advice on fish consumption. The two agencies have concluded pregnant and breastfeeding women, those who might become pregnant, and young children should eat more fish that is lower in mercury in order to gain important developmental and health benefits. The updated draft advice is consistent with recommendations in the 2010 Dietary Guidelines for Americans.
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Scientists analyzed almost half a million fish bones to shed light on the population history of Pacific herring (Clupea pallasii) in the North Pacific Ocean. Their paper, published in the journal Proceedings of the National Academy of Sciences (PNAS) reveals a decline of unprecedented scale. It suggests that while the abundance of Pacific herring does fluctuate naturally, their numbers have fallen precipitously since commercial fishing started targeting the species in the 19th century.
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¿Cómo dice el dicho? ¿Sólo tú puedes prevenir los incendios forestales? O, ¿sólo las cabras pueden prevenir los incendios forestales? Vas a entender la confusión cuando se reúnan las últimas cuadrillas de prevención de incendios de la zona de la BahÃa: Las cabras.
California se enfrenta a un pronóstico de lo que podrÃa ser la peor temporada de incendios gracias a las condiciones de sequÃa y una gran acumulación de yesca. Profesionales de la gestión de incendios están trabajando antes de que sea demasiado tarde para tratar de limpiar la hierba alta y otros riesgos de incendio con la esperanza de reducir la propagación de los incendios inevitables que ya están cruzando el estado.
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