Welcome to Peer Review'd, the show where we break down the latest in science and research so you don't have to read the abstracts. I'm your host, and we've got a packed episode today — from humans orbiting the Moon for the first time in half a century, to zombie cells, warrior wheat, and a termite that looks like a sperm whale. Let's dive in.

Let's start with the biggest news of the week. NASA has launched the Artemis II mission, sending four astronauts on a journey around the Moon — the first crewed lunar flight in more than fifty years. Riding aboard the powerful SLS rocket and the Orion spacecraft, the crew is on a ten-day test flight designed to push critical systems to their limits, verify manual operations, and travel farther from Earth than any humans have ventured in decades. This isn't a landing — not yet — but it's a massive step toward returning boots to the lunar surface. The last time humans traveled to the Moon was Apollo 17 back in 1972. That's more than fifty years of waiting, and the countdown is finally over.

Staying in space, astronomers have spotted a truly bizarre planetary system — one that seems to flip the cosmic rulebook upside down. In our own solar system, smaller rocky planets sit close to the Sun and giant planets live further out. But this newly studied system appears to be arranged in the opposite order — what researchers are calling an inside-out planetary system. Current formation theories really struggle to explain how this happened, and it's prompting a serious rethink of how solar systems develop. It's a good reminder that the universe does not care about our tidy models.

And speaking of cosmic rethinks, scientists at the University of Waterloo have proposed a new quantum gravity theory that could reshape our understanding of the Big Bang itself. Their research suggests that the Big Bang may have unfolded naturally from quantum processes — no need for a singular, inexplicable starting point. Even more exciting, they say the theory could soon be testable. If confirmed, this would be a profound shift in how we understand the origin of everything.

On the topic of signals from out there, a new study from EPFL asks a sobering question: what if alien civilizations have already sent messages our way — and we simply missed them? The researchers suggest that detecting extraterrestrial signals may require searching farther and for much longer than we've previously attempted. It's not that the universe is silent. It might be that we haven't been listening long enough, or in the right places.

Let's come back down to Earth — and to some fascinating biology. Scientists have discovered a new termite species in a South American rainforest canopy, and it has an absolutely wild appearance. Named Cryptotermes mobydicki, this tiny insect has an elongated head and hidden mandibles that make it look strikingly like a miniature sperm whale. Researchers were so surprised by its unusual form that they initially thought it belonged to an entirely new genus. Nature continues to outpace imagination.

Also in the world of surprising evolution: a five-hundred-million-year-old fossil is forcing scientists to completely rethink the origin story of spiders. A researcher was preparing a Cambrian arthropod specimen when he noticed something unexpected — a tiny claw that shouldn't have been there given current evolutionary timelines. The discovery pushes back key spider lineage features by hundreds of millions of years, rewriting what we thought we knew about how these animals developed.

And then there's a wonderful find from South Korea — a rare baby dinosaur, now named Doolysaurus after a famous cartoon character. Using CT scanning technology, researchers discovered hidden bones, including a skull, buried inside rock far faster than traditional preparation methods would allow. The young dinosaur may have been fluffy and somewhat lamb-like, and stomach stones suggest it ate a mix of plants and small animals. Researchers say the find hints that many more dinosaurs may still be waiting inside Korean rock formations.

Now let's talk about something that has serious implications for how we grow food. New research reveals that ancient farmers accidentally bred aggressive, competitive wheat plants without even knowing it. As early humans began cultivating wild grains in dense fields, those plants were thrown into an evolutionary arms race for light and space. The plants that thrived were the ones that grew taller and spread faster — essentially warrior plants. This unintentional selection pressure shaped the wheat we still eat today, and the findings could offer new insights into smarter crop design for the future.

Invasive species are making headlines too. Giant mantises are spreading across Europe, and researchers are raising the alarm. These large predatory insects are posing a growing threat to local biodiversity through intense predation and competition with native species. They're visually striking creatures with deep cultural histories around the world, but their arrival in European ecosystems is anything but welcome for the native wildlife already there.

On the climate front, Arctic permafrost is thawing faster than expected, and the consequences are significant. Scientists studying northern Alaska have found that as the frozen ground melts, ancient carbon that has been locked away for thousands of years is being released into rivers and eventually the atmosphere. This creates a dangerous feedback loop — more carbon in the atmosphere accelerates warming, which thaws more permafrost, which releases more carbon. The researchers describe this as one of the most detailed looks yet at how these processes unfold across entire landscapes.

Now to some health science worth knowing about. A new study suggests that even occasional binge drinking — not regular heavy drinking, just those once-in-a-while nights — may triple the risk of liver damage. Many people assume that keeping alcohol intake low most of the time offsets occasional excess. This research challenges that assumption directly. The liver, it turns out, doesn't average your behavior across the week.

On a more hopeful note for health, researchers have discovered a new way to target so-called zombie cells — senescent cells that stop dividing but refuse to die, accumulating in the body and driving inflammation and aging. Scientists identified a metabolic vulnerability in these cells that could be exploited to clear them out, potentially restoring the body's resilience and slowing age-related decline. It's early-stage research, but the implications for how we treat aging-related diseases could be significant.

Also in brain health news, higher vitamin D levels in midlife appear to be linked to lower levels of tau protein — one of the key markers associated with Alzheimer's disease — years down the line. The study doesn't prove that vitamin D directly prevents dementia, but the association is intriguing and adds to a growing body of evidence suggesting that what happens in our forties and fifties has long-lasting consequences for our brain health.

New research also found that internalized stress — the tendency to suppress or bottle up emotional strain — may quietly accelerate memory decline in older adults. The study, focused on older Chinese Americans, highlights that emotional patterns, not just physical health conditions, play a meaningful role in how the brain ages. It's a reminder that mental and emotional wellbeing deserve a seat at the table when we talk about cognitive health.

In pharmaceutical news, a widely used antidepressant called fluvoxamine has shown unexpected promise in a clinical trial for treating long COVID fatigue — one of the condition's most persistent and disabling symptoms. Researchers found it significantly reduced fatigue in participants, offering potential relief for millions of people whose lives have been disrupted by post-COVID exhaustion. And speaking of drugs, a new trial found that solriamfetol, a wake-promoting medication, can help early-morning shift workers struggling with shift work disorder stay alert and function safely throughout their shifts.

There's also a noteworthy finding about GLP-1 drugs like Ozempic and similar medications. These drugs have become enormously popular for weight loss and cardiovascular benefits, used by roughly one in eight American adults. But new research shows that stopping them can quickly reverse those heart-health gains — faster than many expected. The findings raise important questions about what long-term use actually means and what happens when patients discontinue treatment.

In quantum computing, researchers have zeroed in on a fundamental weakness in quantum circuits — noise. Every step in a quantum calculation introduces small errors that compound over time, like a chain of dominoes where each piece is slightly misaligned. This isn't a new concept, but the new research clarifies just how significant this vulnerability is and suggests it changes how we should think about building reliable quantum systems.

And finally, a genuinely exciting chemistry discovery: scientists have directly detected a mysterious molecule called a tetroxide for the very first time, after seventy years of it being theorized but never observed. These extremely short-lived molecules play key roles in atmospheric chemistry, combustion processes, and even human biology. The fact that they exist under normal air conditions and can now be studied directly opens up new possibilities for understanding oxidation at a fundamental level.

And in colon cancer research, a large study analyzing DNA from over nine thousand patients has found that colorectal tumors consistently host distinct microbial communities — a kind of biological fingerprint. This sets colorectal cancer apart from other cancers and challenges the idea that all cancers have unique microbial signatures. It could open entirely new avenues for diagnosis and treatment.

What a week for science. From the Moon to the microscopic, from ancient wheat to zombie cells — the pace of discovery is relentless. That's all for this episode of Peer Review'd. If something caught your attention today, follow the links in the show notes to dig deeper. Subscribe wherever you get your podcasts, and we'll see you next time.