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Category: sustainability – Page 644

Electricity from germs could be the next big thing, say Israeli researchers

You can generate electricity from oil, you can produce it from natural gas, you can make it from nuclear energy, and you can channel it from the sun, via solar energy conversion systems. You can even generate electricity from photosynthetic bacteria, also known as cyanobacteria, based on a new innovation developed at the Technion. As published in a study in the journal, Nature Communications, the Technion researchers have developed an energy-producing system that exploits both the photosynthesis and respiratory processes that cyanobacteria undergo, with the harvested energy leveraged to generate electricity based on hydrogen.

The study was conducted by three Technion faculty members: Professor Noam Adir from the Schulich Faculty of Chemistry, Professor Gadi Schuster from the Faculty of Biology, and Professor Avner Rothschild, from the Faculty of Materials Science and Engineering. The work involved collaboration between Dr. Gadiel Saper and Dr. Dan Kallmann, as well as colleagues from Bochum, Germany and the Weizmann Institute of Science. It was supported by various bodies, including the Nancy and Stephen Grand Technion Energy Program (GTEP), the Russell Berrie Nanotechnology Institute (RBNI), the Technion Hydrogen Technologies Research Lab (HTRL), the Adelis Foundation, the Planning and Budgeting Committee’s I-CORE program, the Israel Science Foundation, the USA-Israel Binational Science Fund (BSF) and the German research fund (DFG-DIP).

Scientists have long considered cyanobacteria a possible energy source. Cyanobacteria belong to a family of bacteria common to lakes, seas, and many other habitats. The bacteria use photosynthetic mechanisms that enable them to generate energy from sunlight. They also generate energy in the dark, via respiratory mechanisms based on digestion and degradation of sugar.

Ocasio-Cortez’s climate plan is the only one that matches scientific consensus on the environment

Ocasio-Cortez’s 100%-renewable plan puts her in agreement with a coalition of US mayors who have committed to the goal of complete decarbonization within their own cities. But Ocasio-Cortez, who has an economics degree, also couples that plank with an economic plan she is calling the Green New Deal.

In a major upset on Tuesday night, Alexandria Ocasio-Cortez, a 28-year-old Latina democratic socialist from the Bronx, beat out the longtime US representative Joe Crowley in the New York primaries. In the overwhelmingly Democratic district, she is practically certain to win a seat in Congress during the general election in November.

Ocasio-Cortez’s climate-change platform would become the most progressive of that of any sitting Congressperson in the Democratic party—and her primary victory catapults that platform into the mainstream.

“We need more environmental hardliners in Congress,” she told In These Times magazine earlier this week. “We need a Marshall Plan for renewable energy in the United States. The idea that the Democratic Party needs to be moderate is what’s holding us back on this.”

Increase in storms could have ‘catastrophic impact’ on fishing industry

Potential changes in the frequency and intensity of storms off the coast of the UK and around the world could have a “catastrophic impact” on the livelihood of fishermen and sustainability of fishing industries, research led by the University of Exeter has shown.

The research, based on a review of past studies and examination of future projections, warns that the increase in storms could make fishing more dangerous, displace fish from their natural habitats and interfere with the ability of fish to breed.

Storms off the coast of the UK are projected to become more frequent and intense over the next two centuries and more dramatic storms are expected in the North Sea and North Atlantic, to the West of the UK, Ireland and France, threatening the future of fishermen and the fish they catch.

Low-cost plastic sensors could monitor a range of health conditions

An international team of researchers have developed a low-cost sensor made from semiconducting plastic that can be used to diagnose or monitor a wide range of health conditions, such as surgical complications or neurodegenerative diseases.

The sensor can measure the amount of critical metabolites, such as lactate or glucose, that are present in sweat, tears, saliva or blood, and, when incorporated into a , could allow to be monitored quickly, cheaply and accurately. The new device has a far simpler design than existing sensors, and opens up a wide range of new possibilities for health monitoring down to the cellular level. The results are reported in the journal Science Advances.

The device was developed by a team led by the University of Cambridge and King Abdullah University of Science and Technology (KAUST) in Saudi Arabia. Semiconducting plastics such as those used in the current work are being developed for use in solar cells and flexible electronics, but have not yet seen widespread use in biological applications.

Sodium- and potassium-based batteries could be key for smart grid of the future

From electric cars that travel hundreds of miles on a single charge to chainsaws as mighty as gas-powered versions, new products hit the market each year that take advantage of recent advances in battery technology.

But that growth has led to concerns that the world’s supply of , the metal at the heart of many of the new rechargeable batteries, may eventually be depleted.

Now researchers at the Georgia Institute of Technology have found new evidence suggesting that batteries based on and hold promise as a potential alternative to lithium-based batteries.

California lawmakers debate creating regional electric grid

A contentious proposal to link oversight of California’s electric grid with other western states faces a crucial test Tuesday in a state Senate committee.

Supporters say regionalizing the grid would make it easier and cheaper to deploy renewable energy across the western United States. But critics, including some environmentalists and consumer advocates, say California would jeopardize its efforts to require the expansion of renewables.

California has greatly expanded the use of , particularly wind and solar, but that’s brought new challenges for grid operators to manage supply and demand as weather patterns and sunlight vary.

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