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Chemicals in consumer products linked to lower IQs in children
Scientists find common chemicals can negatively impact pregnant women.

- Researchers find a link between the use of chemicals by pregnant women and lower IQs in children by age 7.
- The scientists looked at chemical exposure in women in the first trimester of pregnancy.
- The issue particularly affects boys.
Researchers found that exposure to certain chemicals in consumer products during the first trimester of pregnancy is linked to lower IQ in children by age 7. Among the first of its kind, the study, carried out by scientists from the Icahn School of Medicine at Mount Sinai and Karlstad University, Sweden, linked mixtures of suspected endocrine-disrupting chemicals to prenatal neurodevelopment.
The research analyzed data from SELMA, a study of Swedish mothers and children during the first trimester of pregnancy, measuring 26 chemicals in the blood and urine of 718 mothers. The chemicals included bisphenol A (BPA), commonly found in plastic food and drink containers, as well as pesticides, phthalates, and others. Some of the 26 are established to affect the endocrine (hormone) activity while others are suspected to do so.
The scientists revisited the families when children reached age 7, finding that the kids whose mothers had greater amounts of chemicals in their system while pregnant exhibited lower IQ scores. This particularly affected boys, whose scores were two points lower. From all the chemicals, the greatest contribution to lower IQ was found to be from the compound bisphenol F (BPF), a BPA-replacement.
Credit: Environmental International
Other potentially harmful chemicals included the pesticide chloropyrifos, polyfluoroalkyl substances from cleaning products, triclosan, found in antibacterial soaps, soft polyvinyl chloride plastics and phthalates, which are used in cosmetics as well as numerous other products like soaps, nail polish, hairspray, shower curtains, raincoats, car interiors and even dryer sheets, as reported Scientific American.
Many of the chemicals only stay in the body for a short period of time, indicating that even being exposed to them briefly can have a negative effect. Previous studies linked endocrine disruptors to neurodevelopmental issues in children.
Eva Tanner, PhD, MPH, a postdoctoral researcher in the Department of Environmental Medicine and Public Health at the Icahn School of Medicine at Mount Sinai, put their study in perspective —
"This study is significant because most studies evaluate one chemical at a time; however, humans are exposed to many chemicals at the same time, and multiple exposures may be harmful even when each individual chemical is at a low level," said Tanner.
Why ‘mom guilt’ is an unreasonable term

Professor Carl-Gustaf Bornehag of Karlstad University reiterated that being exposed to chemical mixtures in regular consumer products can affect the developing brains of children. Even chemicals that are supposed to be safer, like BPF, are not likely any better.
The scientists call for more research to confirm and expand upon their findings.
Check out the study here, published in Environment International.
Scientists find 16 'ultra-black' fish species that absorb 99.9% of light
These alien-like creatures are virtually invisible in the deep sea.
A female Pacific blackdragon
- A team of marine biologists used nets to catch 16 species of deep-sea fish that have evolved the ability to be virtually invisible to prey and predators.
- "Ultra-black" skin seems to be an evolutionary adaptation that helps fish camouflage themselves in the deep sea, which is illuminated by bioluminescent organisms.
- There are likely more, and potentially much darker, ultra-black fish lurking deep in the ocean.
The Pacific blackdragon
Credit: Karen Osborn/Smithsonian
<p>When researchers first saw the deep-sea species, it wasn't immediately obvious that their skin was ultra-black. Then, marine biologist Karen Osborn, a co-author on the new paper, noticed something strange about the photos she took of the fish.</p><p style="margin-left: 20px;">"I had tried to take pictures of deep-sea fish before and got nothing but these really horrible pictures, where you can't see any detail," Osborn told <em><a href="https://www.wired.com/story/meet-the-ultra-black-vantafish/" target="_blank">Wired</a></em>. "How is it that I can shine two strobe lights at them and all that light just disappears?"</p><p>After examining samples of fish skin under the microscope, the researchers discovered that the fish skin contains a layer of organelles called melanosomes, which contain melanin, the same pigment that gives color to human skin and hair. This layer of melanosomes absorbs most of the light that hits them.</p>A crested bigscale
Credit: Karen Osborn/Smithsonian
<p style="margin-left: 20px;">"But what isn't absorbed side-scatters into the layer, and it's absorbed by the neighboring pigments that are all packed right up close to it," Osborn told <em>Wired</em>. "And so what they've done is create this super-efficient, very-little-material system where they can basically build a light trap with just the pigment particles and nothing else."</p><p>The result? Strange and terrifying deep-sea species, like the crested bigscale, fangtooth, and Pacific blackdragon, all of which appear in the deep sea as barely more than faint silhouettes.</p>Pacific viperfish
David Csepp, NMFS/AKFSC/ABL
<p>But interestingly, this unique disappearing trick wasn't passed on to these species by a common ancestor. Rather, they each developed it independently. As such, the different species use their ultra-blackness for different purposes. For example, the threadfin dragonfish only has ultra-black skin during its adolescent years, when it's rather defenseless, as <em>Wired</em> <a href="https://www.wired.com/story/meet-the-ultra-black-vantafish/" target="_blank">notes</a>.</p><p>Other fish—like the <a href="http://onebugaday.blogspot.com/2016/06/a-new-anglerfish-oneirodes-amaokai.html" target="_blank">oneirodes species</a>, which use bioluminescent lures to bait prey—probably evolved ultra-black skin to avoid reflecting the light their own bodies produce. Meanwhile, species like <em>C. acclinidens</em> only have ultra-black skin around their gut, possibly to hide light of bioluminescent fish they've eaten.</p><p>Given that these newly described species are just ones that this team found off the coast of California, there are likely many more, and possibly much darker, ultra-black fish swimming in the deep ocean. </p>'Deep Nostalgia' AI brings old photos to life through animation
Using machine-learning technology, the genealogy company My Heritage enables users to animate static images of their relatives.
- Deep Nostalgia uses machine learning to animate static images.
- The AI can animate images by "looking" at a single facial image, and the animations include movements such as blinking, smiling and head tilting.
- As deepfake technology becomes increasingly sophisticated, some are concerned about how bad actors might abuse the technology to manipulate the pubic.
My Heritage/Deep Nostalgia
<p>But that's not to say the animations are perfect. As with most deep-fake technology, there's still an uncanny air to the images, with some of the facial movements appearing slightly unnatural. What's more, Deep Nostalgia is only able to create deepfakes of one person's face from the neck up, so you couldn't use it to animate group photos, or photos of people doing any sort of physical activity.</p>My Heritage/Deep Nostalgia
<p>But for a free deep-fake service, Deep Nostalgia is pretty impressive, especially considering you can use it to create deepfakes of <em>any </em>face, human or not. </p>When does an idea die? Plato and string theory clash with data
How long should one wait until an idea like string theory, seductive as it may be, is deemed unrealistic?
- How far should we defend an idea in the face of contrarian evidence?
- Who decides when it's time to abandon an idea and deem it wrong?
- Science carries within it its seeds from ancient Greece, including certain prejudices of how reality should or shouldn't be.
Plato used the allegory of the cave to explain that what humans see and experience is not the true reality.
Credit: Gothika via Wikimedia Commons CC 4.0
<p>When scientists and mathematicians use the term <em>Platonic worldview</em>, that's what they mean in general: The unbound capacity of reason to unlock the secrets of creation, one by one. Einstein, for one, was a believer, preaching the fundamental reasonableness of nature; no weird unexplainable stuff, like a god that plays dice—his tongue-in-cheek critique of the belief that the unpredictability of the quantum world was truly fundamental to nature and not just a shortcoming of our current understanding. Despite his strong belief in such underlying order, Einstein recognized the imperfection of human knowledge: "What I see of Nature is a magnificent structure that we can comprehend only very imperfectly, and that must fill a thinking person with a feeling of humility." (Quoted by Dukas and Hoffmann in <em>Albert Einstein, The Human Side: Glimpses from His Archives</em> (1979), 39.)</p> <p>Einstein embodies the tension between these two clashing worldviews, a tension that is still very much with us today: On the one hand, the Platonic ideology that the fundamental stuff of reality is logical and understandable to the human mind, and, on the other, the acknowledgment that our reasoning has limitations, that our tools have limitations and thus that to reach some sort of final or complete understanding of the material world is nothing but an impossible, <a href="https://www.amazon.com/dp/B01K2JTGIA?tag=bigthink00-20&linkCode=ogi&th=1&psc=1" target="_blank" rel="noopener noreferrer">semi-religious dream</a>.</p>Can you still spread coronavirus after getting the vaccine?
The vaccine will shorten the "shedding" time.
