Indigenous teachings are thousands of years old. People born into these traditions are raised into knowledge that those born outside do not—and should not—have. Do not steal from others traditions. Instead, research your own family history and connect to your own roots.
This award-winning documentary deals with the popularization and commercialization of Native American spiritual traditions by Non-Indians.
Important questions are asked of those seeking to commercially exploit Tribal rituals and copy sacred ceremonies and those vested with safeguarding sacred ways. The film represents a wide range of voices from Native communities, and speaks to issues of cultural appropriation with humour, righteous anger, and thoughtful insight.
Written by Daniel Hart Youtube copyright notice : “Alice Di Micele-Not For Sale (24:16)”, sound recording administered by: CD Baby
Our use of plastics has threatened oceans and the marine biodiversity. But our efforts for plastic cleanup, may well threaten a less-known marine ecosystem. This article was originally published in DW.com
Little is known about the neuston, but marine biologists fear this community of organisms living on the ocean surface could be decimated as nets sweep up plastic pollution.
In May 2017, shells started washing up along the Ligurian coast in Italy. They were small and purple and belonged to a snail called Janthina pallida that is rarely seen on land. But the snails kept coming — so many that entire stretches of the beach turned pastel.
An unusual wind pattern had beached the animals. And for the people who walked the shore, this offered a rare encounter with a wondrous ecosystem that most of us have never heard about: The neuston.
The neuston, from the Greek word for swimming, refers to a group of animals, plants and microorganisms that spend all or large parts of their life floating in the top few centimeters of the ocean.
It’s a mysterious world that even experts still know little about. But recently, it has been the source of tensions between a project trying to clean up the sea by skimming plastic trash off its surface, and marine biologists who say this could destroy the neuston.
A world between worlds
The neuston comprises a multitude of weird and wonderful creatures. Many, like the Portuguese man-of-war, which paralyzes its prey with venomous tentacles up to 30 meters long, are colored an electric shade of blue, possibly to protect themselves against the sun’s UV rays, or as camouflages against predators.
There are also by-the-wind sailors, flattish creatures that raise chitin shields from the water like sails; slugs known as sea dragons that cling to the water’s surface from below with webbed appendages; barnacles that build bubble rafts as big as dinner plates; and the world’s only marine insects, a relation of the pond skater.
Between the Worlds
They live “between the worlds” of the sea and sky, as Federico Betti, a marine biologist at the University of Genoa, puts it. From below, predators lurk. From above, the sun burns. Winds and waves toss them about. Depending on the weather, their environment may be warm or cool, salty or less so.
But now, they face another — manmade — threat from nets designed to catch trash. A project called The Ocean Cleanup, run by Dutch inventor Boyan Slat, has raised millions of dollars in donations and sponsorship to deploy long barriers with nets that will drift across the ocean in open loops to sweep up floating garbage.
Plastic and marine life are moved by currents
“Plastic could outweigh fish in the oceans by 2050. To us, that future is unacceptable,” The Ocean Cleanup declares on its website. But Rebecca Helm, a marine biologist at the University of North Carolina Asheville, and one of the few scientists to study this ecosystem, fears that The Ocean Cleanup’s proposal to remove 90% of the plastic trash from the water could also virtually wipe out the neuston.
One focus of Helm’s studies is where these organisms congregate. “There are places that are very, very concentrated and areas of little concentration, and we’re trying to figure out why,” says Helm. One factor is that the neuston floats with ocean currents, and Helm worries that it might collect in the exact same spots as marine plastic pollution. “Our initial data show that regions with high concentrations of plastic are also regions with high concentrations of life.”
The Ocean Cleanup says Helm’s concerns are based on “misguided assumptions.”
“It’s true that neustonic organisms will be trapped in the barriers,” says Gerhard Herndl, professor of Aquatic Biology at the University of Vienna and one of project’s scientific advisors. “But these organisms have dangerous lives. They’re adapted to high losses because they get washed ashore in storms and they have high reproductive rates. If they didn’t, they’d already be extinct.”
Helm says they just don’t know how quickly these creatures reproduce, and in any case recovering from passing storm is very different from surviving The Ocean Clean Up’s systems which could be in place for years.
Still a lot to learn about the neuston
In December, The Ocean Cleanup and Helm participated in a symposium on the topic hosted by the Institute for Risk and Uncertainty at the University of Liverpool in the UK. Since then, direct communication between them has stopped, says Helm. “They’re not interested in talking to me anymore.”
Both sides agree that much is still unknown about the neuston. But one thing that has been established is that most of the oceans’ fish spend part of their lifecycle in the neuston. “More than 90% of marine fish species produce floating eggs that persist on the surface until hatching,” Betti says.
The Ocean Cleanup has undertaken one of the few studies into this ecosystem, collecting data on the neuston on the relative abundance of neuston and floating plastic debris in the eastern North Pacific Ocean during a 2019 expedition to the Pacific Garbage Patch, an area where plastic pollution has accumulated on a vast scale. But it is not yet sharing what it has found. The information was being prepared for publication in an as of yet unspecified journal, probably some time next year, an Ocean Cleanup spokesperson said.
Is the solution inshore?
Helm believes the best way to tackle the marine plastic problem would be to position the barriers closer to land — across river mouths and bays — to catch garbage before it reaches the sea.
“Stopping the flow of plastic into the ocean is the most cost-effective — and literally effective — way to ensure that it’s not entering our environment,” she says. As for the plastic already floating in open waters, she does not believe it is worth sacrificing parts of neuston and wants to see more research first.
The Ocean Cleanup has made barriers across rivers a part of its mission. But it is also going ahead with its original vision of pulling trash from the open water. In late 2018, the project deployed a 600-meter, u-shaped prototype net into the Great Pacific Garbage Patch.
The system ran into difficulties, failing to retain plastic as hoped, and needing to be brought shore for repairs and a design upgrade, after which Ocean Cleanup says it gathered haul of plastic that it will recycle and resell to help fund future operations. Over the next two years, the project hopes to deploy up to 60 such barriers to collect drifting flotsam. Helm isn’t the only one concerned about these plans.
“We should think twice about every action we take in the sea,” Betti says. “In nature, nothing is as easy as we think, and often, we’ve done a lot of damage while trying to do a good thing.”
This article was first published on www.dw.com. You can find the full and original article here:
The production of plastics must halt. It is the only way to stop the influx of toxic substances into streams, rivers, lakes, oceans, and into our own bodies. This piece, which is made up of excerpts from a longer article, discusses new research into microplastics found in human organs.
Microplastics are plastics that are less than five millimeters in diameter and nanoplastics are less than 0.001 millimeters in diameter. Both are broken down bits of larger plastic pieces that were dumped into the environment. According to PlasticsEurope.org, 359 million tons of plastic was produced globally in 2019.
Previous research has shown that people could be eating a credit card’s worth of plastic a day; a study published in 2019 suggests humans eat, drink, and breathe almost 74,000 microplastic particles a year. Microplastics have been found in places ranging from the tallest mountains in the world to the depths of the Mariana Trench.
The Arizona State University scientists developed and tested a new method to identify dozens of plastics in human tissue that could eventually be used to collect global data on microplastic pollution and its impact on people. To test the technique, the scientists used 47 tissue samples from lung, liver, spleen, and kidney samples collected from a tissue bank. Researchers then added particles to the samples and found they could detect microplastics in every sample.
These specific tissues were used because these organs are the most likely to be exposed to, filter, or collect plastics in the human body. Because the samples were taken from a tissue bank, scientists also were able to analyze the donors’ lifestyles including environmental and occupational exposures.
“It would be naive to believe there is plastic everywhere but just not in us,”
Rolf Halden, a scientist on the team, toldThe Guardian. “We are now providing a research platform that will allow us and others to look for what is invisible—these particles too small for the naked eye to see. The risk [to health] really resides in the small particles … This shared resource will help build a plastic exposure database so that we can compare exposures in organs and groups of people over time and geographic space.”
The researchers found bisphenol A (BPA) in all 47 samples and were also able to detect polyethylene terephthalate (PET)—a chemical used in plastic drink bottles and shopping bags. They also found and analyzed polycarbonate (PC) and polyethylene (PE). These particles can end up in human bodies through the air or by consuming wildlife like seafood that has eaten plastic; or by consuming other foods with trace amounts of plastic from packaging. The team also developed a computer program that converts the collected data on plastic particle count into units of mass and area.
“In a few short decades, we’ve gone from seeing plastic as a wonderful benefit to considering it a threat,”
Charles Rolsky, a member of the team, said in a press release. “There’s evidence that plastic is making its way into our bodies, but very few studies have looked for it there. And at this point, we don’t know whether this plastic is just a nuisance or whether it represents a human health hazard.”
This article was first published on 17th August 2020.
In this article Elizabeth Claire Alberts describes Charles Moore’s discovery of microplastics throughout the ocean, freshwater rivers and lakes, and even in mist and rain.
‘Our life is plasticized’: New research shows microplastics in our food, water, air
Microplastics, plastic pieces smaller than 5 millimeters, have become increasingly prevalent in the natural world, and a suite of studies published in the last three years, including several from 2020, shows that they’ve contaminated not only the ocean and pristine wildernesses, but the air, our food, and even our bodies.
Past research has indicated that 5.25 trillion plastic pieces are floating in the ocean, but a new study says that there are 2.5 to 10 times more microplastics in the ocean than previously thought, while another recent study found that microplastic “hotspots” could hold 1.9 million pieces per square meter.
Other emerging research suggests that 136,000 tons of microplastics in the ocean are being ejected into the atmosphere each year, and blowing back onto land with the sea breeze, posing a risk to human health.
Microplastics are also present in drinking water, and edible fruits and vegetables, according to new research, which means that humans are ingesting microplastics every day.
In 1997, Charles Moore was sailing a catamaran from Hawaii to California when he and his crew got stuck in windless waters in the North Pacific Ocean. As they motored along, searching for a breeze to fill their sails, Moore noticed that the ocean was speckled with “odd bits and flakes,” as he describes it in his book, Plastic Ocean. It was plastic: drinking bottles, fishing nets, and countless pieces of broken-down objects.
“It wasn’t an eureka moment … I didn’t come across a mountain of trash,” Moore told Mongabay. “But there was this feeling of unease that this material had got [as] far from human civilization as it possibly could.”
Moore, credited as the person who discovered what’s now known as the Great Pacific Garbage Patch, returned to the same spot two years later on a citizen science mission. When he and his crew collected water samples, they found that, along with larger “macroplastics,” the seawater was swirling with tiny plastic particles: microplastics, which are defined as anything smaller than 5 millimeters but bigger than 1 micron, which is 1/1000th of a millimeter. Microplastics can form when larger pieces of plastics break down into small particles, or when tiny, microscopic fibers detach from polyester clothing or synthetic fishing gear. Other microplastics are deliberately manufactured, such as the tiny plastic beads in exfoliating cleaners.
“That’s when we really had the eureka moment,” Moore said. “When we pulled in that first trawl, which was outside of what we thought was going to be the center [of the gyre], and found it was full of plastic. Then we realized, ‘Wow, this is a serious situation.’”
This new research shows that there’s actually a larger quantity of plastic in the ocean than previously thought, and that the plastic even enters the atmosphere and blows back onto land with the sea breeze. Recent studies also indicate that plastic is infiltrating our bodies through food and drinking water.
Featured image: Marine debris litters a beach on Laysan Island in the Hawaiian Islands National Wildlife Refuge, where it washed ashore. Image by Susan White / USFWS.
Tiny pieces of plastic contaminate almost every sea in the world. Now scientists have found that marine creatures like fish and birds are eating this microscopic waste, which may be harming their health.
The main concern is that microplastics are plastic pieces too small to see with the naked eye. They may be small by design, or be fragments of larger pieces of plastic waste.
Their size means they can be mistaken for food by even the smallest sea creatures, as well as large animals like seabirds and fish.
Scientists are concerned about the damage this could be causing. Plastics could block animals’ digestive systems or lower the amount of food they can eat. Not only that, but microplastics can carry toxic chemicals on their surface. So, scientists are calling for further research into pollution from microscopic waste.
“Things have progressed in terms of understanding where you can find microplastics and how much is out there, but we still haven’t worked out what damage this is doing to animals,” says Matthew Cole from the Plymouth Marine Laboratory and the University of Exeter, who has co-authored a major review of all published microplastic studies.
“We’re still on the tip of the iceberg in terms of understanding how these particles affect the health of marine animals,” he adds.
Mass production of plastic began in the 1940s and has since exploded. In 2009, 230 million tonnes of plastic were produced, equivalent to the weight of a double-decker bus every two seconds. The increase in large plastic waste in the sea quickly concerned people, because of its visibility. Understandably, the spread of microscopic plastic fragments has gone largely unnoticed by the general public.
But the chemicals these fragments carry may be more dangerous than the plastics themselves. Plastic often contains additives to make it last longer. These additives can be harmful to health, changing hormonal patterns in fish and birds. And, because plastics are oil-based, they are particularly good at attracting waterborne pollutants from other sources.
These persistent organic pollutants can lead to hormone disruption, development problems and cancer. If marine animals swallow tiny plastic particles, the chemicals on their surface could be easily taken up.
“Almost like a Trojan horse, microplastics can help transfer potentially dangerous chemicals to animals,” Cole explains.
The scientists also looked at where these microplastics come from. Some are designed to be microscopic. These include the beads used in exfoliating facial washes, as well as those used in air-blasters to remove rust and paint from the hulls of boats. Other microplastics may be fragments of bigger objects, from plastic bags to fishing gear.
Half the world’s population lives within just 50 miles of the coast, so it’s easy to see how plastic waste gets into the marine environment. It finds its way into storm drains and sewage systems, where it slips through the filters in wastewater treatment works into rivers and out to sea. Around 80 percent of plastic debris in the sea comes from inland.
Now, Cole is trying to work out whether the tiniest sea creatures, called zooplankton, can take up microplastics. This is the first stage in trying to understand whether these particles can travel up the food chain. If they can get into zooplankton, then they could be passed on to bigger animals that eat them. This so-called trophic transfer could ultimately affect us too.
“If they’re trophically transferred they could end up in the human food supply,” says Cole. “But, without doing a lot more work we won’t know what the full effects of these compounds are.”
