Xanthohumol, a type of flavonoid found in hops and beer, has been shown in a new study to improve cognitive function in young mice, but not in older animals.
The research was just published in Behavioral Brain Research by scientists from the Linus Pauling Institute and College of Veterinary Medicine at Oregon State University. It’s another step toward understanding, and ultimately reducing the degradation of memory that happens with age in many mammalian species, including humans.
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Some scientists and analysts are touting carbon capture and storage as a necessary tool for avoiding catastrophic climate change. But critics of the technology regard it as simply another way of perpetuating a reliance on fossil fuels.
For more than 40 years, companies have been drilling for carbon dioxide in southwestern Colorado. Time and geology had conspired to trap an enormous bubble of CO2 that drillers tapped, and a pipeline was built to carry the greenhouse gas all the way to the oil fields of west Texas. When scoured with the CO2, these aged wells gush forth more oil, and much of the CO2 stays permanently trapped in its new home underneath Texas.
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Las representaciones de animales en antiguos artefactos egipcios han ayudado a los cientÃficos a reunir un registro detallado de los grandes mamÃferos que vivÃan en el valle del Nilo en los últimos 6,000 años. Un nuevo análisis de este expediente demuestra que la extinción de ciertas especies, probablemente causada por el clima árido y el crecimiento de la población humana en la región, ha hecho que este ecosistema sea cada vez menos estable.
El estudio, publicado en Proceedings of the National Academy of Sciences (PNAS), encontró que las extinciones locales de especies de mamÃferos...
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Las emisiones de dióxido de carbono continúan tocando el extremo superior de los escenarios de emisiones, erosionando las posibilidades de mantener el calentamiento global por debajo de 2 ° C, y la colocación de una mayor presión sobre los lÃderes mundiales antes de la Cumbre del Clima de las Naciones Unidas el 23 de septiembre.
Las emisiones globales de dióxido de carbono procedentes de la combustión y del proceso de producción de cemento a partir de combustibles fósiles, crecieron...
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Carbon dioxide emissions continue to track the high end of emission scenarios, eroding the chances to keep global warming below 2°C, and placing increased pressure on world leaders ahead of the United Nations Climate Summit on the 23rd September.
Global carbon dioxide emissions from fossil fuel combustion and cement production grew 2.3 per cent to a record high of 36.1 billion tonnes CO2 in 2013. In 2014 emissions are set to increase a further 2.5%, 65 per cent above the level of 1990.
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