Los estadounidenses aman a sus perros, pero no siempre les encanta recoger sus desechos. Y eso es un problema. Las heces de los perros que quedan en el suelo se lavan con el curso del agua, a veces llevando bacterias, incluyendo cepas resistentes a los antibióticos, que pueden enfermar a las personas. Los científicos han desarrollado un nuevo test genético para averiguar qué tanto los perros están contribuyendo a este problema de salud, según un informe en la revista ACS Environmental Science & Technology.
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According to the Centers for Disease Control and Prevention (CDC), many teens skip breakfast, which increases their likelihood of overeating and eventual weight gain. Statistics show that the number of adolescents struggling with obesity, which elevates the risk for chronic health problems, has quadrupled in the past three decades. Now, MU researchers have found that eating breakfast, particularly meals rich in protein, increases young adults' levels of a brain chemical associated with feelings of reward, which may reduce food cravings and overeating later in the day. Understanding the brain chemical and its role in food cravings could lead to improvements in obesity prevention and treatment.
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Since the first undersea methane seep was discovered 30 years ago, scientists have meticulously analyzed and measured how microbes in the seafloor sediments consume the greenhouse gas methane as part of understanding how the Earth works. The sediment-based microbes form an important methane "sink," preventing much of the chemical from reaching the atmosphere and contributing to greenhouse gas accumulation. As a byproduct of this process, the microbes create a type of rock known as authigenic carbonate, which while interesting to scientists was not thought to be involved in the processing of methane.
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Agriculture, one of California’s strongest pillars, has taken the biggest hit: the drought will cost at least $2.2 billion in agricultural losses this year alone. Fields of dead almond trees and dried-out crops are a common sight in central California these days. Central Valley towns are also growing desperate. Many have been forced to install porta-potties in their backyards or even steal water from fire hydrants.
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The house fly might be a worldwide pest, but its genome will provide information that could improve our lives. From insights into pathogen immunity, to pest control and decomposing waste, the 691 Mb genome has been sequenced and analyzed by a global consortium of scientists, and is published in the open access journal Genome Biology. The genome highlights detoxification and immune system genes that are unique to the insect, and could be subjects of further study to help humans deal with toxic and disease causing environments.
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Researchers set out to examine how soaring birds such as eagles, vultures, and kites, are able to fly in 'gusty' turbulent flight conditions that would keep a light aircraft grounded. They gave a captive steppe eagle (Aquila nipalensis), called 'Cossack', its own flight recorder backpack – a 75g black box incorporating GPS that also measured acceleration, rotation rate, and airspeed – and recorded it soaring over the Brecon Beacons in Wales.
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