Day: January 4, 2021

MVRDV Breaks Ground on Matrix 1, a Sustainable Office and Laboratory Complex in Amsterdam

Read the full story at ArchDaily.

Construction has begun on MVRDV’s six-story sustainable office and laboratory complex. Located in the heart of Amsterdam Science Park, in the eastern part of the city, the project, designed for the Matrix Innovation Center, “will be virtually energy neutral and uses demountable construction techniques”.

Scientists solve mystery of mass coho salmon deaths. The killer? A chemical from car tires

Read the full story at Phys.org.

When officials in Seattle spent millions of dollars restoring the creeks along Puget Sound—tending to the vegetation, making the stream beds less muddy, building better homes for fish—they were thrilled to see coho salmon reappear.

But when it rained, more than half, sometimes all, of the coho in a creek would suffer a sudden death.

These mysterious die-offs—an alarming phenomenon that has been reported from Northern California to British Columbia—have stumped biologists and toxicologists for decades. Numerous tests ruled out pesticides, disease and other possible causes, such as hot temperatures and low dissolved oxygen.

Now, after 20 years of investigation, researchers in Washington state, San Francisco and Los Angeles say they have found the culprit: a very poisonous yet little-known chemical related to a preservative used in car tires.

This chemical is just one of a vast number of contaminants that washes off roads whenever it rains. This giant soup of pollutants, which includes trillions of microplastics, rushes down drains and into creeks and ultimately into the sea.

A Guide to Green Chemistry Experiments for Undergraduate Organic Chemistry Labs

Beyond Benign, My Green Lab, and MilliporeSigma have teamed up to develop a comprehensive teaching guide for undergraduate labs featuring Green Chemistry alternatives to traditional organic chemistry experiments and Green Chemistry lab practices.

Food Waste Among Materials Harvested in H&M’s Latest Collection

Read the full story at Triple Pundit.

H&M’s latest clothing line, dubbed the “Conscious Exclusive A/W20 Collection,” takes recycling to a new level with a line of clothing and accessories created from materials, including food waste, that had been destined for the trash bin.

Uncertainty plagues junior researchers from underprivileged backgrounds amid pandemic

Read the full story in Nature.

Early-career scientists who are members of minority ethnic groups or struggle financially explain how institutions and funders can provide support.

How Climate Change Is Ushering in a New Pandemic Era

Read the full story in Rolling Stone.

A warming world is expanding the range of deadly diseases and risking an explosion of new zoonotic pathogens from the likes of bats, mosquitoes, and ticks

We read the paper that forced Timnit Gebru out of Google. Here’s what it says.

Read the full story at MIT Technology Review.

The company’s star ethics researcher highlighted the environmental and financial risks of large language models, which are key to Google’s business.

‘Very small silver lining’ of COVID-19? An extra 2.5 years to reduce power sector emissions: report

Read the full story in Utility Dive.

The economic setback from COVID-19 reset the baseline for power sector emissions by about 2.5 years, according to a new report from BloombergNEF.

“One very small silver lining, maybe coronavirus buys us a couple of extra years to reduce emissions,” Seb Henbest, BNEF chief economist and lead author of the New Energy Outlook, said during a webinar sponsored by the Center for Strategic & International Studies. “Even as we return to growth … we never go back to the levels of emissions that we had before,” according to the report’s modeling based on the costs and advancements in available technology.

BNEF sees a $14 trillion global investment in distribution and transmission through 2050 in an economic transition scenario, a model that does not take into account long-term commitments and policies for decarbonization. As part of that scenario, BNEF sees a total investment of $15 trillion for power generation, including an increasing amount in energy storage technology. 

Peatlands keep a lot of carbon out of Earth’s atmosphere, but that could end with warming and development

More valuable than it looks. David Stanley/Flickr, CC BY

by Julie Loisel (Texas A&M University)

Peatlands are a type of wetland where dead plant material doesn’t fully decompose because it’s too soggy. In these ecosystems, peat builds up as spongy dark soil that’s sometimes referred to as sod or turf. Over thousands of years, yards-thick layers of peat accumulate and trap huge amounts of carbon, helping to cool the climate on a global scale.

But that might not be true for much longer. Warming temperatures and human actions, such as draining bogs and converting them for agriculture, threaten to turn the world’s peatlands from carbon reservoirs to carbon sources.

In a newly published study, our multidisciplinary team of 70 scientists from around the world analyzed existing research and surveyed 44 leading experts to identify factors that could change peatlands’ carbon balance now and in the future. We found that permafrost degradation, warming temperatures, rising sea levels and drought are causing many peatlands around the world to lose some of their stored carbon. This is in addition to rapid degradation caused by human activity. And unless steps are taken to protect peatlands, carbon loss could accelerate.

Map showing global distribution of peatlands.
Peatlands are found in an estimated 180 countries. Many of them have not been recognized and are not yet properly mapped. Levi Westerveld/GRID-Arendal, CC BY-ND

From carbon sink to carbon source

Although they only occupy 3% of the global land area, peatlands contain about 25% of global soil carbon — twice as much as the world’s forests. Peatlands exist on every continent, even in Antarctica. In the U.S. they are found in many states, including Maine, Pennsylvania, Washington and Wisconsin. These ecosystems form where partially decayed organic matter accumulates in cold soil that is nearly always wet, which dramatically slows decomposition. https://www.youtube.com/embed/sMawMMtME7g?wmode=transparent&start=0 Humans have used peat for centuries as a fuel, and also to flavor whiskey.

But now climate change is altering those conditions. For example, in many regions of the Arctic, rapid permafrost thawing promotes microbial activity that releases greenhouse gases into the atmosphere. These microbes feed off carbon-rich peats that were once frozen.

Massive peatland fires also contribute. Recent wildfires like those in Russia are known to release as much carbon in a few months as total human carbon dioxide emissions in an entire year. And these fires are especially tricky to put out. Embers within the dense organic matter can reignite many months or even years later.

Human activities are also increasing greenhouse gas releases from these carbon-rich ecosystems. In the United Kingdom, for example, extracting peat for use in gardening has caused peatlands to emit an estimated 16 million tons of carbon every year – roughly equivalent to the annual greenhouse gas emissions from over 12 million cars.

In Indonesia and Malaysia, as fertile land becomes increasingly scarce, peatlands are being burned, drained, and repurposed. Already, most peatlands in Indonesia have been destroyed in order to build palm oil plantations.

Peat blocks stacked to dry
Peat cut into blocks and drying on racks in Tierra del Fuego, Argentina. Julie Loisel, CC BY-ND

The World Resources Institute estimates that in Indonesia and Malaysia, peatland draining results in total annual emissions equal to those of nearly 70 coal plants. These activities also endanger vulnerable animal populations, such as orangutans and various species of freshwater fish. Peatland degradation due to human activity accounts for 5-10% of annual carbon dioxide emissions from human activity, despite these zones’ tiny geographic footprint.

Quantifying peatland carbon

Predicting how much carbon will be released from peatlands worldwide is hard to do, especially because no models can adequately represent these ecosystems and the many factors that influence their carbon balance.

Peatlands are not included in most earth system models that scientists use to make future climate change projections. There is a long-held view that peatlands are minor players in the global carbon cycle on a year-to-year basis, but our study and many others show that climate change and human intervention are making these ecosystems very dynamic. Our study highlights the need to integrate peatlands into these models; we also hope it can help direct new research.

Even though models are not ready, decisions need to be made now about how to manage peatlands. That’s why we surveyed experts as a first step towards predicting the fate of peat carbon worldwide.

Based on their responses, we estimate that 100 billion tons of carbon could be emitted from peatlands by 2100 – an amount equivalent to about 10 years of emissions from all human activities, including burning fossil fuels and clearing forests. The experts we consulted have not reached a consensus, and our estimate is highly uncertain: Net changes in peat carbon over the next 80 years could range from a gain of 103 billion tons to a loss of 360 billion tons.

Not every region will be affected the same way. High-latitude peatlands might see an increase in carbon storage under a warming climate because of increased plant growth and greater peat accumulation. Tropical peats, on the other hand, are more likely to dry out and burn due to warming temperatures and human activity. These factors and human choices about peatland use will affect whether these areas become carbon sources or sinks in the future.

Tropical forested wetland
Tropical peatlands in Panama. Angela Gallego-Sala, CC BY-ND

Overall, our results suggest that carbon releases will surpass carbon gains in the coming years, primarily because of human impacts in tropical peatlands. This switch from carbon sink to carbon source will feed a positive feedback loop, with peatlands releasing carbon that makes Earth’s climate warmer, which makes peatlands release more carbon, and so on.

Despite the uncertainty in our findings, we believe our results show that peatlands should be included in climate models, and that nations should take steps to preserve them.

Toward sustainable use

A balance must be achieved between wise peatland use and local economic needs. Given how much carbon peatlands hold and how vulnerable they are, many surveyed experts believe people soon will adopt more sustainable practices for managing them. But others are not so optimistic. In regions such as the Amazon and the Congo basins, where large peatland complexes were recently discovered, it is critical to take action to preserve them.

Peatlands should also be considered in integrated assessment models that researchers use to understand climate change impacts and options for mitigating them. Models that project future socioeconomic change and carbon emission pathways could help develop incentives such as peatland carbon pricing and sustainable use practices. This would change the way these ecosystems are valued and managed.

The first step, however, is to raise awareness around the world of this precious natural resource and the consequences of continuing to exploit it.

Julie Loisel, Assistant Professor of Geography, Texas A&M University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

What will 2021 bring in the world of conservation?

Read the full story at Ensia.

If it did nothing else, the emergence of Covid-19 a year ago underscored for all of us the importance of anticipating and preparing for — and, as appropriate, steering the course of — things that might happen in the future.

That is, in a nutshell, the goal of the 2021 Horizon Scan of Emerging Global Biological Conservation Issues, recently published in the scientific journal Trends in Ecology & Evolution by Cambridge University conservation biologist William Sutherland and a team of 24 other conservation practitioners and researchers from around the world.

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