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Why Did AstraZeneca Withdraw Its COVID-19 Vaccine?

The Oxford-AstraZeneca COVID-19 vaccine, known as Vaxzevria, is set to be withdrawn globally nearly 3.5 years after its initial approval, a decision attributed to a surplus of updated vaccines and declining demand. Experts, including Professor Adam Finn from the University of Bristol, suggest that the vaccine's effectiveness has diminished due to the emergence of new variants, making its continued production commercially unviable. Despite its discontinuation, AstraZeneca noted that the vaccine saved over 6.5 million lives in its first year of use and was pivotal in combating the pandemic. While the vaccine faced scrutiny over rare blood clotting issues, the risk was found to be low, with COVID-19 itself posing a greater threat. Experts acknowledge the vaccine's significant role in the pandemic response, but agree that more effective and safer alternatives are now available, indicating that its time may have passed. sources

Published:
Nov 29 2025, 3 am

Myth vs. Medicine: Unveiling Nature's Healing Power

In an increasingly urbanized and fast-paced world, many individuals question whether modern living fosters wellness or contributes to a broader sense of "unwellness," encompassing mental, emotional, and spiritual health. A growing body of research suggests that reconnecting with nature can significantly enhance well-being, with studies indicating that spending just two hours a week in green spaces can lead to improved mental and physical health. However, access to these natural environments is not equitable, particularly in urban areas. While the benefits of nature are well-documented, the wellness industry is rife with pseudoscientific claims, such as the controversial "earthing" movement, which lacks credible evidence. Despite these challenges, the therapeutic potential of nature remains compelling, prompting calls for greater access to green spaces as a means to improve public health and foster a deeper connection with the environment. sources

Published:
Nov 29 2025, 4 am

"IFLScience Launches Membership Model for Future Collaboration"

IFLScience is launching a new membership model aimed at enhancing its engagement with the scientific community and its readers, according to Managing and Editorial Director Johannes Van Zijl. This initiative comes in response to the evolving media landscape, which has seen a rise in misinformation and operational costs, prompting a shift towards a more sustainable funding structure. The membership tiers will allow users to access a range of benefits, including reduced ads, exclusive content, and special events, while still providing free access to essential articles. The model is designed to ensure high-quality journalism that prioritizes accuracy and transparency, enabling IFLScience to invest in its team and technology. Van Zijl emphasized that this change is not just about maintaining operations but enriching the reader experience, reaffirming the organization's commitment to making science accessible and engaging for all. sources

Published:
Nov 28 2025, 9 pm

Ancient Indonesian "Pyramid" Likely Not Human-Made

A recent study published in *Archaeological Prospection* has sparked significant debate by claiming that Gunung Padang, a mountain in Indonesia, is the world's oldest pyramid, constructed between 25,000 and 14,000 years ago. This assertion, if validated, would challenge existing timelines of human development, suggesting advanced construction techniques existed before agriculture. However, many archaeologists have expressed skepticism, arguing that the evidence presented is insufficient. Notably, Lutfi Yondri from BRIN highlighted that local inhabitants lived in caves between 12,000 and 6,000 years ago, lacking the masonry skills required for such a structure. Critics, including Cardiff University's Flint Dibble, acknowledged the use of legitimate data but criticized the conclusions drawn, particularly regarding soil samples that lacked signs of human activity. The journal is currently investigating the study, while many experts lean towards the view that the mound is likely a natural formation rather than a man-made pyramid. sources

Published:
Nov 28 2025, 6 pm

The Origins of Space's "Most Terrifying Photo"

In a historic moment for space exploration, astronaut Bruce McCandless II made headlines on February 7, 1984, when he became the first person to conduct an untethered spacewalk from the space shuttle Challenger. Alongside fellow astronaut Bob Stewart, McCandless donned a Manned Maneuvering Unit (MMU) and ventured into the void of space, hurtling at nearly 28,900 kilometers per hour (18,000 miles per hour). Despite the daunting speed, the MMU allowed for a gentler experience, using nitrogen gas for propulsion. McCandless, reflecting on the moment, humorously compared his leap to Neil Armstrong's moon landing, stating, "It may have been a small step for Neil, but it’s a heck of a big leap for me." While the image of him floating untethered may evoke fear for many, McCandless described the experience as one of profound professional pride and personal elation, marking a significant milestone in human spaceflight. sources

Published:
Nov 29 2025, 2 am

"New Paper Suggests We Complicate a Simple Universe"

Quantum mechanics and general relativity, the cornerstones of 20th-century physics, have proven their accuracy but reveal limitations, particularly in understanding black holes and the Big Bang. The quest for a unified theory that reconciles quantum properties with gravity continues, with candidates like string theory and loop quantum gravity leading the charge. A recent preprint by researchers from MIT and the Kavli Institute explores the Hilbert space of quantum gravity, revealing that in a closed universe, this space is one-dimensional, suggesting the absence of an external observer. While the study does not definitively address the existence of a deity, it raises intriguing questions about the nature of existence within such a universe. Although it does not resolve the unification challenge, it may have implications for black hole physics, and its notable footnote has sparked interest in the scientific community. The preprint is available on arXiv. sources

Published:
Nov 25 2025, 4 pm

Eros: First Near-Earth Asteroid to Fly By This Weekend

The first near-Earth asteroid ever discovered, 433 Eros, will make a close fly-by of Earth this weekend, passing approximately 60 million kilometers (37.2 million miles) away on November 30, 2025. This safe distance allows for a spectacular view, as the stony asteroid, measuring around 34 × 11 × 11 kilometers, will shine brightly for several weeks and can be observed with a modest telescope. Eros will skim near the Andromeda Galaxy, our closest galactic neighbor. For those unable to observe it in person, the Virtual Telescope Project will livestream the event at 8pm UTC. Discovered in 1898 by German astronomer Gustav Witt, Eros has been the subject of significant scientific study, including a historic landing by NASA's NEAR Shoemaker spacecraft in 2001, which conducted groundbreaking experiments on its surface. As Eros graces the night sky, it serves as a reminder of humanity's ongoing fascination with space exploration. sources

Published:
Nov 28 2025, 11 pm

60 Million-Year-Old Dinosaur Egg Disguised as Agate "Rock"

A seemingly ordinary pink and white agate, part of London's Natural History Museum's Mineralogy Collection since 1883, has been identified as a dinosaur egg, astonishing curators. Measuring approximately 15 centimeters across, the specimen caught the attention of Robin Hansen during its display preparation in 2018. A visit to a mineral show in France sparked the revelation when Hansen encountered a similar agatised dinosaur egg. Subsequent inspections by dinosaur curators, including CT scans, suggested the specimen's thin outer layer resembled a shell, and its characteristics matched those of titanosaur eggs found in India, China, and Argentina, dating back 60 million years. The egg likely became encased in volcanic rock, with silica-rich water creating the striking agate appearance. Hansen emphasized the importance of museum collections, noting that while the specimen was cataloged as agate in 1883, its true significance has only recently been recognized. sources

Published:
Nov 28 2025, 7 pm

The 17th Century: A Truly Dreadful Era to Live In

The 17th century, often overshadowed by other historical crises, is increasingly recognized as a period of profound hardship marked by widespread conflict, political instability, and environmental challenges. Known as "The General Crisis," this era, spanning from the early 1600s to the early 1700s, saw a significant decline in the global population, primarily due to numerous wars, including the devastating Thirty Years' War, which claimed up to 8 million lives. Concurrently, the Little Ice Age brought severe climate changes, leading to agricultural failures and food shortages, further exacerbating social unrest. Historical documents from the time reflect a pervasive sense of despair, with contemporaries fearing an impending apocalypse. As modern society grapples with its own crises, including climate change and geopolitical tensions, the lessons of the 17th century remind us that even the darkest periods can eventually give way to renewal. sources

Published:
Nov 28 2025, 8 pm

Earth's Quietest Place: Ambient Sound at -24.9 Decibels

Identifying the quietest natural place on Earth is challenging due to various factors, including wind, wildlife, and human activity. However, the Haleakalā Crater in Hawaii, situated 3,055 meters above the Pacific Ocean, is often cited as the quietest National Park in the U.S. The National Park Service notes that ambient sound levels in the crater can drop to as low as 10 decibels, allowing visitors to hear their own heartbeat. In contrast, the title of the quietest place overall belongs to the anechoic chamber at Orfield Laboratories in Minneapolis, which has recorded sound levels as low as -24.9 decibels. This chamber, designed to absorb 99.99% of sound, has garnered three Guinness World Records for its extreme quietness. Visitors often report disorientation and heightened awareness of bodily sounds, challenging the perception of silence itself. sources

Published:
Nov 24 2025, 11 pm

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