Depictions of animals in ancient Egyptian artefacts have helped scientists assemble a detailed record of the large mammals that lived in the Nile Valley over the past 6,000 years. A new analysis of this record shows that species extinctions, probably caused by a drying climate and growing human population in the region, have made the ecosystem progressively less stable.
The study, published in Proceedings of the National Academy of Sciences (PNAS), found that local extinctions of mammal species led to a steady decline in the stability of the animal communities in the Nile Valley.
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The prime cod fishing grounds of North America have been depleted or wiped out by overfishing and poor management. But in Arctic waters, Norway and Russia are working cooperatively to sustain a highly productive — and profitable - northern cod fishery.
What years of dwelling in the cold Atlantic had amassed, an army of knife-wielding, white-suited Norwegian factory workers were taking apart in just minutes. In a consummate display of optimization, streams of fish parts were whisked along on conveyor belts around and above me, with various cuts destined for their most appropriate markets. Nothing was wasted.
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From big company agricultural farming, to communal farming or even personal agronomy, the business of growing crops for an expanding global population will be crucial in the near future. The two most important resources needed to run these farms are one, water, and two, land. But these resources often come at a premium, especially with growing populations and increased food demand. Farmers and researchers have already started leaning towards genetic engineering and industrial processing to help with their crop yields, but a new solution in agribusiness is emerging. Vertical farming.
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The fall foliage season that prompts millions of Americans to undertake jaunts into the countryside each year could come much later and possibly last a little longer within a century, according to new research. Climate change could postpone fall leaf peeping in some areas of the United States as summer temperatures linger later into the year, Princeton University researchers report in the journal Global Ecology and Biogeography.
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Clownfish spend their entire lives nestling in the protective tentacles of host anemones, but new research shows that as babies they sometimes travel hundreds of kilometres across the open ocean. Although the process of long-distance dispersal by reef fish has been predicted, this is the first time that the high level exchange of offspring between distant populations has been observed. Dr Steve Simpson, Senior Lecturer in Marine Biology and Global Change in Biosciences at the University of Exeter, and colleagues from the Australian Research Council Centre of Excellence for Coral Reef Studies (ARC COE CRS), Sultan Qaboos University (Oman) and the Centre National de la Recherche Scientifique (France) have published their findings on the dispersal of Omani clownfish larvae in the journal PLOS ONE.
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As nations zero in on the UN's post-2015 global Sustainable Development Goals, innovations being successfully pioneered and demonstrated in Malaysia offer several proven tactical ideas for improving the world, says an influential international sustainable development networking organization.
The UN's Sustainable Development Solutions Network (SDSN), through its Malaysian chapter, cites ways in which the country is "rising to the challenge," including the construction of ingenious, self-sustaining "smart" villages -- each lifting about 100 families out of poverty and into affordable homes and employment.
Meanwhile, guides for minimizing the carbon footprint of cities while promoting healthy lifestyles, and using science to extract new wealth from palm biomass waste are among other creative initiatives underway in Malaysia that help light a path for emerging economy countries.
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Burlington, Vermont, already considered to be one of the United States's most environmentally progressive cities, has added another line to its impressive green resume. Just recently, the city finalized its transition to relying 100% on renewable resources for its energy. Burlington is Vermont's large city, though that in itself is no big feat – the city has a population of just 42,000. Then again, very few communities of even this size have managed to disassociate themselves from fossil fuels. In order to adequately tackle climate change, cities – big and small – need to prioritize finding and utilizing alternative energy solutions. Burlington had expressed a desire to commit to 100% renewable energy for more than a decade, but it became a real possibility when analysts discovered that it was not only a smart environmental choice, but financially viable, too. In the long run, both the city and residents will not be paying more for clean energy than they were when buying fossil fuels.
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This Sunday 21st September hundreds of thousands of people have pledged to march in New York, London, Amsterdam and many other cities around the world to demand climate justice, standing with climate and dirty energy-affected communities worldwide. They are hoping to influence world leaders gathering in New York for their one-day Climate Summit taking place on 23rd September to exceed the poor expectations vested in them.
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Declines in populations of pollinators, such as bees and wasps, may be a key threat to nutrition in some of the most poorly fed parts of the globe, according to new research.
A major study, published today in the Proceedings of the Royal Society B and co-authored by a University of Leeds academic, looked at the importance of pollinators to 115 of the most common food crops worldwide and the importance of those crops in delivering vital nutrients to vulnerable populations.
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Sixty percent of Americans now live in regions where electric vehicles (EVs) produce fewer heat-trapping global warming emissions per mile than the most efficient hybrids, according to an updated analysis from the Union of Concerned Scientists (UCS). In 2012, that number was just 45 percent.
"Electric vehicles are doing more and more to fulfill their technological promise," said Don Anair, research director for UCS's Clean Vehicles Program. "If we want to reduce transportation pollution and oil use, a big part of the answer is to be like Bob Dylan and go electric."
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