How Parkinson’s Disease Affects Your Ability to Enjoy Pleasurable Scents

Investigating the Olfactory Response to Citrus for Diagnosing Parkinson’s Disease

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Research indicates that individuals with Parkinson’s disease often struggle to enjoy pleasant aromas, such as that of lemons. This intriguing finding suggests that “the world smells different” for those affected, presenting a potential opportunity for healthcare professionals to diagnose Parkinson’s disease using a cost-effective and non-invasive method, which traditionally requires several years and extensive evaluations.

The inability to detect scents is a primary symptom of Parkinson’s disease, affecting 75-90% of patients and frequently manifesting years or even decades prior to the characteristic tremors. Although numerous efforts have aimed to utilize olfactory loss as a diagnostic criterion, challenges arise since this sensory decline also occurs with normal aging.

Recently, Professor Noam Sobel and his team at the Weizmann Institute of Science in Rehovot, Israel, adopted a novel method of examining odor perception.

The study involved 94 participants, primarily aged 50 to 70. Among them, 33 were diagnosed with Parkinson’s disease, another 33 reported no known medical issues, while 28 were affected by anosmia not related to Parkinson’s. Standardized tests and surveys were employed to evaluate the participants’ ability to recognize and identify odors.

A unique feature of the study was the assessment of so-called olfactory fingerprints. Participants rated the intensity and pleasantness of scents from three bottles: one with a high concentration of lemon-scented citral, another containing a mix of compounds that emitted a feces-like odor, and a third bottle that was empty.

All tests observed periods of reduced olfactory ability, but only the olfactory perceptual fingerprint successfully differentiated between those with anosmia and individuals with Parkinson’s disease, achieving an impressive 88 percent accuracy. This accuracy rose to 94% when participants were matched by age and gender.

Interestingly, individuals with Parkinson’s disease reported perceiving citrus scents as equally strong compared to a healthy group, though both scent-related issues considered had lower comfort ratings than the healthy participants. Notably, those with Parkinson’s sniffed nearly 2 percent longer in response to unpleasant odors than lemon scents, while the other groups exhibited a decline in sniffing duration by 11 to 12 percent.

Sobel and his colleagues hypothesize that while the olfactory system remains functional in people with Parkinson’s disease, their brains interpret these signals differently, resulting in reduced enjoyment of pleasant scents and an involuntary sniffing response that is disconnected from the aroma’s pleasantness.

This phenomenon likely relates to alterations in brain regions like the anterior olfactory nucleus, which diminishes when odor signals are lost and is believed to be one of the initial sites of brain pathology in Parkinson’s disease.

Distinguishing between aging-related anosmia and that caused by Parkinson’s is immensely valuable. Michał Pieniak from the Smell and Taste Clinic at the Technical University of Dresden, Germany, highlights that around one in ten individuals seeking help for lost smell may, in fact, develop Parkinson’s disease. “If we can refine the identification of their personal risk, it would be a major breakthrough.”

Charles Greer, a professor at Yale University School of Medicine, asserts that this innovative method shows remarkable potential but emphasizes the necessity for further testing with a larger population. Given that olfactory loss can precede other Parkinson’s symptoms by years, it may take considerable time to fully evaluate this approach.

Topics:

  • Feelings/
  • Parkinson’s Disease

Source: www.newscientist.com

Unlock the Benefits of Fasting: Enjoy Health Gains Without Skipping Meals

The advantages of fasting are well-documented. Research indicates that fasting can lower blood pressure, reduce inflammation, control blood sugar levels, and naturally promote weight loss. The downside, of course, is that it involves abstaining from food.

But what if you could enjoy the same benefits without completely cutting out food? Enter the Fasting Mimic Diet, designed to offer similar advantages while allowing for some consumption.

This diet restricts overall calorie intake and protein consumption but permits small servings of plant-based foods, including vegetable soups, leafy greens, nuts, and seeds.










Adhere to this diet for 5 consecutive days each month. Start with burning 700 to 1,100 calories on the first day. For the subsequent four days, limit your intake to no more than 750 calories, with macronutrient distribution of 10% from protein, 45% from carbohydrates, and 45% from fat.

Similar to traditional fasting, this diet triggers a state of “cellular housekeeping,” which allows cells to break down and recycle old and dysfunctional components like proteins and organelles. This process promotes cellular energy, function, and prevents the accumulation of defective proteins that contribute to cancer and neurodegenerative diseases.

A 2023 study found that fasting-mimicking diets could help with symptoms related to prevention and treatment strategies for Alzheimer’s disease, although further research is essential. Additional studies have revealed benefits like cholesterol reduction and improvements in other cardiovascular biomarkers.

However, current research on this diet remains limited, especially concerning its effects on humans. Nutritionists advise caution; it may not be suitable for pregnant women, those who exercise vigorously, or individuals with a history of eating disorders. Even healthy adults might experience side effects such as dizziness, fatigue, and headaches. Always consult your doctor if in doubt.


This article, authored by Rebecca Thorton from Leeds, tackles the question: “Do copycat diets work?”

For inquiries, please email questions@sciencefocus.com or reach us via Facebook, Twitter, or our Instagram page (include your name and location).

Explore more amazing science on our Ultimate Fun Facts page.


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Source: www.sciencefocus.com

Prepare to Enjoy the Four Epic Supermoons Ahead!

2024 Colorado Springs Supermoon

Parker Seibold/The Gazette AP Photo/Alamy

Moon enthusiasts are in for a treat in the coming months, as four supermoons will be appearing. These remarkable full moons are named for the colder months in the Northern Hemisphere: the October Hunter Moon, the November Beaver Moon, and the December and January Wolf Moons. What sets a supermoon apart is its larger and brighter appearance compared to an ordinary full moon.

A supermoon occurs when the full moon coincides with the point in its elliptical orbit around Earth where it is closest to our planet. This results in a moon that is 8% larger and 15% brighter than the typical full moon, a sight that skywatchers everywhere can appreciate.

The next full moon will rise in November, but the difference between this supermoon and the usual ones may not be easily noticed. To fully experience the supermoon, it’s best to observe it when it is on the horizon, as this can create an illusion of it being even larger alongside nearby objects.

The first supermoon is set to appear on October 7th. If conditions are clear, you will be able to view the fully illuminated moon as soon as the sun sets, no matter where you are.

Even if you miss this one, it’s still a splendid time to gaze at the moon. After the full moon, it will travel through the sky toward the constellation Taurus, offering plenty of celestial sights.

By October 10th, the moon will dim, yet more than 75% will still shine brightly, located near the Pleiades, known as the seven sisters—a cluster of young stars about 440 light years away that formed simultaneously.

Only the brightest stars of this group can be seen with the naked eye, which is why they are referred to as the seven sisters. They appear in a roughly square shape with lines extending from one corner, reminiscent of the Plow or the Big Dipper.

On October 14th, the moon will be illuminated at less than 50% and will be positioned next to the planet Jupiter. If you have binoculars or a small telescope, you may be able to spot some of Jupiter’s four Galilean moons, its largest satellites.

If you’re interested in studying the moon closely, take a look through a telescope on October 30th, when it will be in its first quarter phase. Throughout the months, you’ll have the chance to see fascinating optical phenomena on the moon’s surface known as the X and V shapes.

By early November, it will be time for the next supermoon.

These articles are published weekly
NewsCientist.com/Maker

Source: www.newscientist.com

Good Parents and Devoted Partners Enjoy Longer Lives

Recent studies suggest that our evolutionary predecessors may have prioritized gender over survival, potentially explaining why men tend to have shorter lifespans than women.

Historically and globally, men usually live shorter lives than women. To understand the reasons behind this evolutionary trend, researchers at the Max Planck Institute in Germany focused on insights from our animal relatives rather than solely examining human history.

Their study, published in Advances in Science, analyzed over 1,000 animal species to identify evolutionary traits associated with gender differences in lifespan.

The team discovered that while genetics plays a role, monogamy is also significant in influencing male lifespan. In contrast, parenting may contribute to women’s longer lives.

In humans, women live on average 5 years longer than men, but this trend is not unique to our species. In fact, 72% of mammals show that females live on average 12% longer than their male counterparts, with some female moose living more than twice as long as males.

However, this pattern doesn’t hold true across all animal species. In birds, males frequently outlive females.

A primary explanation lies in chromosomes, which are fundamental to gender differences. Female mammals possess two X chromosomes, whereas males have a shorter Y chromosome.

According to Dr. Johanna Staerk, the lead researcher, “Men’s single X chromosome means they are particularly susceptible to harmful mutations, as they lack a second copy for compensation,” she explained to BBC Science Focus.

“The ‘toxic Y’ hypothesis posits that the Y chromosome may harbor genetic factors that negatively influence health and aging.”

Conversely, in birds with ZW chromosomes, males have two Z chromosomes while females possess one Z and a truncated W chromosome. However, if chromosomes were the sole factor, males would live longer in all bird species.

“Some species demonstrate the opposite of what we expect,” Staerk noted. “In many birds of prey, for instance, females exhibit longer lifespans than males. This indicates that sex chromosomes alone cannot explain the patterns.”

What other factors are at play? Researchers believe that the issue involves more than mere genetic sex; it includes reproductive strategies. While birds typically show monogamous behavior, only a minority of mammals do.

“Males frequently bear the burden of mating endeavors,” Staerk said. “To attract mates, they develop traits like big horns and manes that require energy investments, increasing their risk of injury and reducing their lifespan.”

The effort to develop large horns and then engage with rivals means that male moose live only half as long as females – Credit: Getty Images

Attractive and robust males tend to father more offspring, but the biological resources required for developing larger muscle and horn structures negatively impact their lifespans. In monogamous species, the competition is less intense, allowing males to avoid such trade-offs during evolution, resulting in smaller lifespan gaps between sexes.

One intriguing finding highlighted how parenting influences lifespan. While one might assume that parental responsibilities detract from longevity due to energy exertion, the opposite was observed: caregiving genders often live longer, especially in species like primates, where offspring require extended care.

For example, a mother chimpanzee may care for her young for up to a decade. This implies that mothers who live longer are better positioned to nurture their offspring.

“Extended lifespans enable caregivers to obtain selective advantages by ensuring that their young reach maturity,” stated Staerk.

However, it remains challenging to determine definitively whether the longevity benefits stem from parenting alone or from monogamy.

Ultimately, being a dedicated partner and parent seems crucial to achieving a longer lifespan for men, particularly from an evolutionary standpoint.

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Source: www.sciencefocus.com

Saddle Up: Enjoy a Loose, Lycra-Free Experience in the Wheel World | Games

hEre Admission: At 37 years old, I still haven’t learned to drive. In the summer of 2021, I attempted to learn, and during my second lesson, I asked the instructor if he played a lot of video games. When he replied, “Yes,” he remarked, “I thought so.” I don’t have free time. Sadly, countless hours spent dominating friends and family in Mario Kart and wreaking havoc in Grand Theft Auto didn’t translate into actual driving skills. I enjoy racing games precisely because of their unrealism.

Without a license, I cycle everywhere on my gigantic orange bike, which can fit both my kids in the back. It looks absolutely ridiculous. Picture me next to a middle-aged man clad in Lycra, zooming past on his sleek carbon fiber bike. That’s not a ride I would take to rural areas or down mountain trails. Thus, I often find solace in video games.

Surprisingly, there aren’t many bike-themed games, but my long-standing affection for them mirrors my passion for virtual golf. One of my favorites is the Solitary Mountains. Downhill presents a stunningly realistic trajectory down increasingly perilous mountains, paired with minimalist nature sounds and the clattering of my bike on rocks. Another delightful cycling adventure is Knights and Bikes, which has an 80s summer vacation vibe, following kids exploring an island on two wheels.




Pedals to metal (not)… the world of wheels. Photo: Messhof/Steam

Recently, I’ve been enjoying Wheel World, a creation of California developer Messhof (also known for the classic 1-on-1 fencing game Nidhog). In this game, I navigate islands on a handlebar racing bike, keeping an eye out for hidden paths and ramps while competing against local riders. It feels like a low-octane, cartoon-colored version of Forza Horizon on two wheels, encapsulating both the freedom and peace of cycling without the stress of controlling a car. Instead, I simply ride.

I’ve been dealing with a troublesome injury for most of the year (hence my absence from the newsletter). Wheel World soothes my nerves. Players must first be chosen by an ancient bike spirit to race the island’s fastest champion and reclaim mystical bike parts. While it’s not particularly challenging—I’ve won most races—it still manages to capture the essence of cycling through towns that share the road with tractors and semi-rural farmland. You can take your time without worrying about sticking strictly to paved paths.

Although I’ve experienced other racing games like Wheel World, none have felt quite like it. The game’s design reassures me completely. It’s a realm devoted entirely to the celebration of biking, free from complications or distractions. Customizing my ride is a joy (especially with vibrant color options), and while new parts subtly alter the pedaling experience, the energetic soundtrack heightens the atmosphere during races, yet mellows out for peaceful exploration. Five hours in, I found myself overqualified for the final race but opted to continue exploring the delightful terrain designed for two-wheel enthusiasts.

At times, in moments of physical or emotional recovery, a captivating game to lose yourself in is essential. Other times, a brief, uplifting experience is what you need. Wheel World helped me miss my real bike a little less.

What to Play




Top Gear…Metal Gear Solid Delta: Snake Eater. Photo: Konami

Longtime readers know I’ve been critical of Hideo Kojima’s games, but critic Tom Regan is excited for the impending release of Metal Gear Solid 3, rebranded as Metal Gear Solid Delta: Snake Eater. “Snake Eater is an apocalyptic Metal Gear, a Cold War escapade, heading towards a James Bond-esque apocalypse,” he describes. “Kojima’s admiration for Hollywood is evident, and while his work often turns into sprawling epics, this game remains his most cinematic creation.”

Available on: PC, PS5, Xbox
Estimated Playtime: Approximately 20 hours

What to Read




Snail’s Pace… Hollow Knight: Silkson has been in development for seven years. Photo: Team Cherry
  • According to Bloomberg (£), the long-awaited Hollow Knight: Silkson took seven years to develop because the team enjoyed the process too much to stop. “We might have continued indefinitely,” William Peren from Team Cherry said.

  • An incredible quote from Sony PlayStation chief, Harmen Halst, from a Financial Times Interview (£), after last year’s Concord incident: “For us, when we fail, we want to fail early and cheaply.”

  • Last week, Gamescom broke attendance records with 357,000 visitors in Cologne. According to the organizers, this proves that face-to-face gaming events are finally returning to stability post-pandemic.

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What to Click

Question Block




A long-lost tale… the story of a vagrant. Photo: Square Enix

Leader Tom presents this week’s question:

“With all these remakes emerging, what games do you wish to see (me included)? “

We all have that one game, right? We know that if someone gave it the green light, modern technology would enhance it positively. Although Vagrant Story isn’t entirely forgotten, Square Enix has been preserving its catalog, especially with a grand remake following in the footsteps of Final Fantasy VII. Naoshima Yoshida from Final Fantasy XIV has claimed it as one of his favorites, so there’s at least a 50% chance for a re-release. I held onto hope that it might surprise fans at one of the major annual showcases.

We’ve revisited highly sought-after remakes over the years, so why not ask again: Are you still waiting for someone to revive it? And if you have another question for the question block, or feedback on the newsletter: Please email pushbuttons@theguardian.com.

Source: www.theguardian.com

Hannah Fry discusses the science of laughter: Monkeys enjoy being tickled, mice giggle | Revealing the formula for life by Hannah Fry

The British sense of humor is cherished among Brits, but it’s natural to assume that many British jokes may be embarrassing to other cultures. There is an interesting point to consider here – humor is not universal. What one finds amusing is not inherent, but rather cultural.

Humor differs significantly from laughter, which is a common experience for all human beings, even the grumpiest ones. Laughter is much easier to comprehend and study scientifically.

For instance, TV producers have long understood that incorporating a pre-recorded “laugh track” can make people perceive something as funnier compared to when they don’t hear that laughter (I’m Looking at You, 90’s Sitcom). However, neuroscientist Robert Provine found that jokes are not even necessary. In a study conducted in 2013, Provine solely played the laugh track, which surprisingly was adequate to induce laughter in nearly all participants.

Provine’s groundbreaking research on laughter involved observing it in real-world settings rather than just in a lab. Observing people laughing in public, he empirically proved that individuals are significantly more likely to laugh in the presence of others than when alone, approximately 30 times more likely. Moreover, laughter is not necessarily a response to finding something funny but serves as a form of social communication, indicating a positive, nonthreatening interaction.

Laughter is not exclusive to humans; it is observed across the animal kingdom. For example, apes enjoy being tickled and vocalize their enjoyment while playing. Kea parrots are known for their playful behaviors and have distinct calls to amuse others. Additionally, mice produce ultrasonic giggles when playing. Rats tickled regularly by their owners exhibit immediate laughter upon the owner’s arrival, displaying excitement for playtime.

Powered by Galaxy AI to provide resourceful assistance
Thanks to the Chat Assist feature on the new Samsung Galaxy Z Flip6, Galaxy AI analyzes your chats and messages in real-time and displays contextual suggestions as you type to help craft the perfect reply. Therefore, choosing a casual tone is likely to include lighter and wittier touches.

However, humor poses a greater challenge in understanding. What makes certain things more amusing than others? And how do you define what is considered amusing, depending on individual perspectives?

One compelling explanation for humor is that it involves the buildup and release of tension. This concept can explain some well-known comedic moments, such as Del Boy falling on the bar, Basil Fawlty hitting a car with a tree branch, or Mark Simmons’ joke at the Edinburgh Fringe: “I planned to sail around the world in the smallest ship, but chickened out.” These instances are humorous, especially when viewed from a non-human perspective.

Generative AI, trained on vast internet data, is adept at replicating various humor styles, including generating jokes based on given parameters. When prompted with a framework like, “I thought I was going to sail around the world in the world’s smallest ship…”, an AI chatbot replied, “I felt like I was sinking.” Not a bad attempt, right?

However, creating the framework itself, i.e., original humor, involves distilling quirky and unconventional ideas that resonate with shared human experiences but lack any firsthand experience of the world beyond online sources. For now, these unique concepts offer intriguing ways to engage with audiences.

Source: www.theguardian.com

Is it possible to enjoy cake while also cutting out sugar? Welcome to the sugar-free world.

I I eagerly anticipate chocolate chip cookies in the kitchen shared by a bio-based startup in San Francisco. Despite being diagnosed with pre-diabetes a few years back, I typically steer clear of sweets. However, I have a secret weapon – Monchi Monchi, a unique plant fiber-based drink mix designed to expand in the stomach like a sponge, soaking up sugar from food and preventing premature absorption.

The concept behind this product is that it can trap a significant amount of sugar, with laboratory tests showing it can absorb 6 grams of sugar per 1 gram of the mix. Various types of sugar like sucrose, glucose, fructose, and some simple starches can be sequestered. With each sachet containing just over 4 grams, the goal is to counteract the sugar in snacks and provide the gut with fiber replenishment. “How can you enjoy food without compromising your health? I believe we’ve found a solution,” shared Paolo Costa, the company’s co-founder and CEO, as he demonstrated mixing the powder with water and consuming it.

Welcome to the emerging technology of carbohydrate removal, which focuses on neutralizing carbohydrates post-consumption rather than pre-consumption. Despite the rising rates of diabetes and obesity, sugar substitutes, the main method for reducing sugar intake, fall short. They can alter the taste and texture of foods and raise safety concerns. Additionally, they do not stimulate the brain’s reward centers like sugar does. Sugar removal technology offers the enticing prospect of enjoying sugar in a healthier, guilt-free manner. John Topinka, the research and strategy director at Kraft Heinz, believes the entire food industry could benefit from such technology.

Launched in 2019, BioLumen introduced Monch Monch to the U.S. market as a supplement in November. Each granule, a unique microsponge, is composed of plant cellulose (insoluble fibers) infused with the company’s specialized hydrogel (soluble fibers) designed to soak up sugar. Priced at $150 (approximately £120) per month for two bags daily, the product is not widely available yet. However, BioLumen’s vision is to offer it as an ingredient for food manufacturers to incorporate into their products. Having already received “Generally Recognized as Safe” (GRAS) designation in the US, the company is actively working on lowering costs.

The chief medical officer and co-founders of BioLumen include Robert Lustig, a Professor Emeritus of Pediatrics at the University of California, San Francisco, known for raising awareness about the health risks of excessive sugar consumption. While presenting unpublished data from a small human trial showing reduced blood sugar spikes and insulin response with the product, Lustig emphasized the need for a larger, longer-term study to confirm the findings. Further tests, including stool studies, are necessary to determine the exact amount of excreted sugar and its overall efficacy in countering sugar intake.


a Sugar sponges are not the only solution being explored. Some are pursuing a different path by converting sugar into fiber in the intestines. This feat surpasses the digestive enzymes’ capabilities but can be achieved by integrating specific enzymes into foods in carefully measured quantities.

Researchers at Harvard University’s Wyss Institute for Bioinspired Engineering, in collaboration with Kraft Heinz, developed a method utilizing naturally occurring plant enzymes to convert sugars into fiber and encasing them in an edible coating.

The coating, made of fibers, keeps the enzymes dormant in the food while on shelves. In less acidic conditions in the intestines, the coating expands to release the enzymes that break down sugars into simpler components like glucose and fructose. Fructose is converted into soluble fiber, beneficial to the gut microbiome, producing inulin.

Most of the glucose, however, is still absorbed by the body. By encapsulating enzymes that convert glucose into fiber, the coating could potentially offer further benefits. Wyss plans to license this technology to a start-up for further testing and regulatory approval, with anticipated commercialization among US manufacturers in 2026.

Joining Wyss in the enzyme pathway is a British start-up, Zaya, formerly known as Inulox. Their product, Convero, is an enhanced version of a natural inulosucrase enzyme distinct from Wyss’s. Zya’s research shows that this substance, produced using genome-edited microorganisms, efficiently converts sugar into fiber in the intestines.

Through simulated gut models, Zya found that around 30% of carbohydrates are converted to fiber, primarily targeting fructose for conversion into inulin. This proposed change holds promise for humanity, potentially enabling impactful claims in the food industry. Initial pig studies on the natural enzyme showed no harm to the animals, with further studies planned for the enhanced version and human trials.

Requiring minimal amounts for efficacy, both Wyss’s and Zya’s enzymes are easily integrated into existing foods without significant modifications. While there may be an additional cost premium, it is deemed manageable. Zya aims to secure US regulatory approval as a food ingredient by 2026, with plans to expand into Europe and the UK.

Emphasizing functional claims over health claims, Zya focuses on the sugar-to-fiber conversion aspect. By making sugar more digestible, the company envisions a shift towards a more beneficial sugar consumption approach. “Enjoy sugar responsibly with improved digestion,” states Josh Sauer, CEO of Zya.

While these innovative techniques hold promise in mitigating sugar impact on the body, further research is necessary, notes Graham McGregor, charity chairman and professor at the Wolfson Institute of Population Health, Queen Mary University of London. Careful evaluation of clinical trials and safety considerations is crucial before widespread adoption of such products.

Despite the potential benefits, Professor Tim Spector, from King’s College London and co-founder of personal nutrition company Zoe, raises concerns about these products encouraging unhealthy food choices. Stressing the importance of whole foods and reducing ultra-processed products, Spector suggests focusing on a balanced diet. The technology offers tools to manage sugar intake but does not address other harmful food components, urging a holistic dietary approach.

While the future of sugar reduction technologies is promising, Lustig highlights the ongoing challenge of giving up sugar entirely. “We need all the tools we can get,” he concludes.

Source: www.theguardian.com

15 Exciting Science Riddles to Enjoy Solving with Your Family

1. The most common form of aluminum ore, wild goat, a rectangular array of numbers and radiation with wavelengths from 0.01 to 10 nanometers. What do they all have in common, and why did they make the news this year?

2. Four guests will be seated for Christmas dinner. One came from a valley in Germany. One was good with tools, one was said to be intelligent, and the other wanted a chair with a strong backrest. Three people leave the table one by one. Who will sit last?

3. In 2028, abolitionists and the God of Fire will be joined by crystallographers. where are they?

4. It’s time to gather around the table and bond. First, what can you make from these interesting food combinations?

Sweet nougat + chestnut udon

Chipolatas + Flaming Eggnog

Chocolate unicorn + tangy nachos

Angel gingerbread + Asian plum

5. How about going for a brisk walk to relieve the fatigue of your Christmas meal? Along the way, you’ll see a big dog that’s not on a leash, a big bear that’s not in a cave, and a ring that’s inside. I see a bull that is not there. where are you looking?

6. Hark! The pressure between the ship and its surroundings quickly equalizes, creating a wonderful, festive vibration. What just happened?

7. After receiving the clutch Tsugumi Merulaa trio of Gallus gallus domesticus and some Streptoperia turtlewhere do you think you can find it? Perdix?

8. Chinese giant SkyEye only has one, but labs tend to have a few and Christmas dinners have many. what is that? …

Source: www.newscientist.com