Cuando la gente piensa en los organismos genéticamente modificados, por lo general vienen a la mente cultivos de alimentos como el maíz y la soja. Pero la ingeniería de los seres vivos más complejos ahora es posible, y la controversia en torno a la modificación genética se ha extendido ahora al humilde mosquito, que está siendo manipulado genéticamente para controlar las enfermedades transmitidas por ellos.

Una empresa con sede en el Reino Unido, Oxitec, ha alterado dos genes en el mosquito Aedes Aegypti, para que cuando los machos se reproduzcan con hembras salvajes, los hijos hereden un gen letal y mueran en la etapa larval. La agencia estatal que controla los mosquitos en los Cayos de la Florida, está esperando una aprobación, por parte del gobierno federal, para realizar una prueba de mosquitos modificados genéticamente por Oxitec, y evitar la recurrencia de un brote de fiebre del dengue. Pero algunas personas en los Cayos y en otros lugares están en pie de guerra, con una petición, apoyada con más de 155,000 firmas, para oponerse a la prueba de los mosquitos genéticamente modificados en una pequeña área de 400 viviendas junto a Key West.

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La falta de actividad física, junto con las dietas poco saludables, son factores de riesgo clave para las principales enfermedades no transmisibles, como las enfermedades cardiovasculares, el cáncer y la diabetes, según la Organización Mundial de la Salud (OMS).

De un 30 a un 70% de los ciudadanos de la Unión Europea (UE) están actualmente con sobrepeso, mientras que un 10-30% son considerados obesos, según la OMS, que advirtió contra una crisis de...

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Researchers today outlined in a series of reports how governments, organizations and corporations are successfully moving away from short-term exploitation of the natural world and embracing a long-term vision of “nature as capital” – the ultimate world bank upon which the health and prosperity of humans and the planet depend.

The reports, published in the Proceedings of the National Academy of Sciences, suggest that significant progress has been made in the past decade, and that people, policy-makers and leaders around the world are beginning to understand ecosystem services as far more than a tree to cut or fish to harvest.

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About one third of Earth's largest groundwater basins are being rapidly depleted by human consumption, despite having little accurate data about how much water remains in them, according to two new studies led by the University of California, Irvine (UCI), using data from NASA's Gravity Recovery and Climate Experiment (GRACE) satellites. This means that significant segments of Earth's population are consuming groundwater quickly without knowing when it might run out, the researchers conclude. The findings are published today in Water Resources Research.

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From heat waves to damaged crops to asthma in children, climate change is a major public health concern, argues a Michigan State University researcher in a new study. Climate change is about more than melting ice caps and images of the Earth on fire, said Sean Valles, assistant professor in Lyman Briggs College and the Department of Philosophy, who believes bioethicists could help reframe current climate change discourse. “When we talk about climate change, we can’t just be talking about money and jobs and polar bears,” he said. “Why do we focus on polar bears? Why not kids? Climate change isn’t just people hurting polar bears. It’s people hurting people.”

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Improving air quality — in clean and dirty places — could potentially avoid millions of pollution-related deaths each year. That finding comes from a team of environmental engineering and public health researchers who developed a global model of how changes in outdoor air pollution could lead to changes in the rates of health problems such as heart attack, stroke and lung cancer. Outdoor particulate air pollution results in 3.2 million premature deaths annually, more than the combined impact of HIV-AIDS and malaria. The researchers found that meeting the World Health Organization’s (WHO) particulate air quality guidelines could prevent 2.1 million deaths per year related to outdoor air pollution.

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