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jhave : climate_change   16

Frontiers | Toward Biorecycling: Isolation of a Soil Bacterium That Grows on a Polyurethane Oligomer and Monomer | Microbiology
In order to examine bacterial biodegradability of polyurethanes, a soil bacterium was isolated from a site rich in brittle plastic waste. The strain, identified as Pseudomonas sp. by 16S rRNA gene sequencing and membrane fatty acid profile, was able to grow on a PU-diol solution, a polyurethane oligomer, as the sole source of carbon and energy. In addition, the strain was able to use 2,4-diaminotoluene, a common precursor and putative degradation intermediate of polyurethanes, respectively, as sole source of energy, carbon, and nitrogen. Whole genome sequencing of the strain revealed the presence of numerus catabolic genes for aromatic compounds. Growth on potential intermediates of 2,4-diaminotoluene degradation, other aromatic growth substrates and a comparison with a protein data base of oxygenases present in the genome, led to the proposal of a degradation pathway.
5 days ago by jhave
This is how scientists feel - Is this how you feel?
In my day to day job I run simulations with a regional climate model of Greenland and the Arctic to see how glaciers, ice sheets and sea ice respond to greenhouse gas forcings. The processes and connections I am modelling and following are so familiar it is actually rather easy to bear witness to melting glaciers, rising sea level and vanishing sea ice with near complete detachment. Sometimes however, I am caught by surprise by a new result that at first appears counter-intuitive.
24 days ago by jhave
Climate--A New Story: Charles Eisenstein: 9781623172480: Books -
when you ask someone why they first became an environmentalist, they’re likely to point to the river they played in, the ocean they visited, the wild animals they observed, or the trees they climbed when they were a kid. This refocusing away from impending catastrophe and our inevitable doom cultivates meaningful emotional and psychological connections and provides real, actionable steps to caring for the earth. Freeing ourselves from a war mentality and seeing the bigger picture of how everything from prison reform to saving the whales can contribute to our planetary ecological health, we resist reflexive postures of solution and blame and reach toward the deep place where commitment lives.
5 weeks ago by jhave
‘The only uncertainty is how long we’ll last’: a worst case scenario for the climate in 2050 | Environment | The Guardian
Fewer people work outdoors and even indoors the air can taste slightly acidic, sometimes making you feel nauseated. The last coal furnaces closed 10 years ago, but that hasn’t made much difference in air quality around the world because you are still breathing dangerous exhaust fumes from millions of cars and buses everywhere. Our world is getting hotter. Over the next two decades, projections tell us that temperatures in some areas of the globe will rise even higher, an irreversible development now utterly beyond our control. Oceans, forests, plants, trees and soil had for many years absorbed half the carbon dioxide we spewed out. Now there are few forests left, most of them either logged or consumed by wildfire, and the permafrost is belching greenhouse gases into an already overburdened atmosphere. The increasing heat of the Earth is suffocating us and in five to 10 years, vast swaths of the planet will be increasingly inhospitable to humans. We don’t know how hospitable the arid regions of Australia, South Africa and the western United States will be by 2100. No one knows what the future holds for their children and grandchildren: tipping point after tipping point is being reached, casting doubt on the form of future civilisation. Some say that humans will be cast to the winds again, gathering in small tribes, hunkered down and living on whatever patch of land might sustain them.
6 weeks ago by jhave
One-third of plant and animal species could be gone in 50 years, study says
Previous studies have focused on dispersal—or migration to cooler habitats—as a means for species to "escape" from warming climates. However, the authors of the current study found that most species will not be able to disperse quickly enough to avoid extinction, based on their past rates of movement. Instead, they found that many species were able to tolerate some increases in maximum temperatures, but only up to a point. They found that about 50% of the species had local extinctions if maximum temperatures increased by more than 0.5 degrees Celsius, and 95% if temperatures increase by more than 2.9 degrees Celsius.
7 weeks ago by jhave
A Short History of Progress - Ronald Wright - Google Books
"As the crisis gathered, the response of the rulers was not to seek a new course, to cut back on royal and military expenditures, to put effort into land reclamation through terracing, or to encourage birth control (means of which the Maya may have known). No, they dug in their heels and carried on doing what they had always done, only more so."
8 weeks ago by jhave
Smart scale goes dumb as Under Armour pulls the plug on connected tech | Ars Technica
Any smart device comes with its own set of benefits and trade-offs, but there's one huge shoe waiting to drop with every single one of them: anything you connect can be disconnected at the other end, and there's absolutely nothing you the consumer can do about it. Today's example of smart stuff going dumb comes courtesy of Under Armour, which is effectively rendering its fitness hardware line very expensive paperweights.


The story of Under Armour's doomed scale is, unfortunately, something of an endemic side-effect to the Internet of things era. Not only can a company choose to pull support for a product that needs to phone home at any time, but also companies get acquired and go bankrupt all the time.

When this pattern plagues something small and inexpensive like a smart lightbulb, the disconnection is annoying but comparatively low-stakes. But when it's something like a $300 smart-home hub, or $1,200 worth of home security products, consumers who invested a fair amount of cash into something are suddenly up a creek.
dart631  climate_change  iot 
10 weeks ago by jhave
Women Smallholders | Drawdown
On average, women make up 43 percent of the agricultural labor force and produce 60 to 80 percent of food crops in poorer parts of the world. Often unpaid or low-paid laborers, they cultivate field and tree crops, tend livestock, and grow home gardens. Most of them are part of the 475 million smallholder families who operate on less than 5 acres of land.

Women have less access to a range of resources, from land rights and credit to education and technology. Even though they farm as capably and efficiently as men, inequality in assets, inputs, and support means women produce less on the same amount of land. Closing this gender gap can improve the lives of women, their families and communities, while addressing global warming.

If all women smallholders receive equal access to productive resources, their farm yields will rise by 20 to 30 percent; 100 to 150 million people will no longer be hungry. When agricultural plots produce well, there is less pressure to deforest for additional ground, avoiding emissions.
12 weeks ago by jhave
Kenney's claim that carbon tax damaged Alberta economy refuted in court documents | CBC News
The federal tax will be imposed on consumers in Alberta on Jan. 1 to replace the one contained in the Notley government's Climate Leadership Plan, repealed by Kenney this spring as one of his first acts as premier.

The federal government recently accepted Alberta's plan to tax the emissions of heavy emitters at a rate of $30 a tonne in 2020.

The court documents show the economic effect of the Notley government's Climate Leadership Plan, which included a $30-per-tonne carbon tax, was an average reduction in annual growth of Alberta's gross domestic product (GDP) of only 0.05 per cent.
december 2019 by jhave

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