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in General Factchecking by Journeyman (2.1k points)

Clouds now contain microscopic pieces of plastic that in turn are causing “plastic rainfall”, according to a new study.

Scientists fear that these particles of less than 5mm - known as microplastics - could be contaminating “nearly everything we eat and drink”.

by Apprentice (1.6k points)
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I believe that this claim is true. The earliest source that I could find was from National Geographic in April 2019. There are numerous other sources, including CNN, Science Direct, Nature Journal, and Wired. Between the consistency of the narratives in these articles, the reputability of the various magazines, and the multi-year chronology of the narrative, this claim appears to be true, and well documented. The Independent is a legitimate magazine, and has a reputation as a fairly credible source. Furthermore, the author, Vishwam Sankaran, has a profile on Linked In that legitimizes their identity as a journalist. Sankaran has more than 500 connections, and a fully documented history of their professional experience as a science journalist. The topic does seem to be well documented prior to this article, but this article focuses on a more recent study which was also documented by the media company Al Jazeera. The only quote that seems questionable is the scientists’ paraphrased belief that they are the first to discover airborne microplastics in the clouds, as the topic appears to have been covered years prior. The writing of the article itself also evokes credibility, as it is not noticeably opinionated, rather documenting the scientific discovery.
by Novice (640 points)
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This claim is true and has been researched by many environmentalists. The so-called "plastic rain" is a huge concern for our health and the health of all organisms. These microplastics reside in "the free troposphere" and are major pollutants (Sexton). I think it is interesting how this issue may be ignored because these plastics are not seen unless under a microscope in a lab. Therefore people are less likely to remember how concerning it is.
https://www.earth.com/news/plastic-rain-the-growing-threat-of-airborne-microplastics/
by Novice (540 points)
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great job for using a lot of reliable sources! I liked how you looked into the author and their LinkedIn as well for credibility. As for questioning the paraphrased opinion, it's good you pointed that out.
by Novice (550 points)
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This claim and evidence are true and have been tested by many across the globe, one being an example from scientists in eastern China, testing the cloud formation affected by micro-plastics in the air on Mount Tai. They found evidence of fragments where there shouldn't be in the clouds and airflow versus by the land and sea. The details describe in-depth what microplastics are doing to an aspect of our environment and how it could potentially snowball into a much bigger threat. https://www.acs.org/pressroom/presspacs/2023/november/microplastics-found-in-clouds-could-affect-the-weather.html
by Apprentice (1.2k points)
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I liked the way you approached this claim; the information is clear and concise, and you went to extra lengths to fact-check this claim and did a lot of work going "upstream"  to find the LinkedIn of the journalist to legitimize their claims about microplastics in rainfall.

26 Answers

1 like 0 dislike
by Novice (670 points)

According to the American Chemical Society, this claim is true. 

A group of researchers sampled water vapor on top of a mountain in China. These are some more details from the data collected: 

  • Low-altitude and denser clouds contained greater amounts of microplastics.
  • Particles were made of common polymers, including polyethylene terephthalate, polypropylene, polyethylene, polystyrene and polyamide.
  • The microplastics tended to be smaller than 100 micrometers in length, although some were as long as 1,500 micrometers.
  • Older, rougher particles had more lead, mercury and oxygen attached to their surfaces, which the researchers suggest could facilitate cloud development.

The original article also does a very good job breaking down this information for consumers. 

https://www.acs.org/pressroom/presspacs/2023/november/microplastics-found-in-clouds-could-affect-the-weather.html

by Innovator (51.5k points)
0 0
The bullet point list is really helpful. I like how you structured the fact-check and provided additional information.
1 like 0 dislike
by Apprentice (1.6k points)

I believe that this claim is true. I found multiple credited sources that also make this claim that they came to from research studies. Waseda University and the American Chemical Society both have published articles about this finding and how they actually are microplastics found in cloud formations. The scientist from these articles say that they are relatively unsure about how this will effect our drinking water and weather, so it's safe to have some concerns or fear around this findings. 

Sources: 

https://www.waseda.jp/top/en/news/78501 

https://www.acs.org/pressroom/presspacs/2023/november/microplastics-found-in-clouds-could-affect-the-weather.html 

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1 like 0 dislike
by Champion (14.6k points)

This claim is true. ACS reported in November 2023 that "researchers have analyzed microplastics in clouds above mountains." They believe these tiny particles found could be factored into cloud formation, which could affect the weather. Judith Enck, president of Beyond Plastics told CNN“Microplastics are in the air we breathe, they’re in our drinking water, they’re in our bodies. If it’s plastic, you’re going to get microplastics sooner or later.” Researchers found low-altitude and denser clouds had greater amounts of microplastics which tended to be smaller than 100 micrometers in length. Also, older and rougher particles contained more lead, mercury and oxygen which could stimulate the development of clouds.

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ago by Newbie (260 points)

Yes, This claim appears to be true. The article from The Independent cited in the claim uses research published by the university of warsaw. The Independent's claims hold true to the information found in the study conducted in Japan. The university of Waseda press published research that concluded in finding “nine different types of polymers and one type of rubber in the AMPs detected”. Published by an accredited university, with many contributing researchers and authors, the study seems credible. The article was later published in Springer Nature Link, meaning likely went under peer review. 

While on its own, this study would lack a significant sense of credibility, it is verified by the finding of other studies. Researchers at Penn State University found that microplastics were impacting cloud formation and weather. Yale School of the environment also stated that “Nearly a dozen studies have shown airborne microplastic concentrations ranging from between 0.01 particles per cubic meter over the western Pacific Ocean”. Because other studies share similar results, it appears there is truth to this claim. Microplastics have been found in the clouds and rain. 

Sources:

https://www.waseda.jp/top/en/news/78501

https://www.psu.edu/news/research/story/microplastics-impact-cloud-formation-likely-affecting-weather-and-climate

https://e360.yale.edu/features/plastic-waste-atmosphere-climate-weather

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ago by Newbie (220 points)

I believe that this claim is true, microplastics in the water are so small that there would be no true way of knowing with a human eye. It can also be said with the way that plastic decomposes into smaller and smaller parts specifically with it being in the ocean it stands to reason that it would be picked up into the clouds through condensation. In the study conducted by the Waseda University in Japan professor Hiroshi Okochi took water from different altitudes of Mt Fuji ranging from 1300-3776 meters (4265-12388 feet) and found the presence of many different Polymers "Moreover, the presence of hydrophilic (water loving) polymers in the cloud water was abundant, suggesting that they were removed as “cloud condensation nuclei.” https://www.waseda.jp/top/en/news/78501. In conclusion there is definitely microplastics within rainfall however we have yet to find out the true impact this is going to have on the ecological balance of the planet. 

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0 like 0 dislike
ago by Newbie (300 points)

This claim is true. Micro plastics can be found in clouds and rainwater due to the adhesion of plastic materials in larger bodies of water that soon evaporate turning into clouds. 

https://www.plasticcollective.co/plastic-rain-microplastics-in-the-sky/

True

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