Toggle light / dark theme

New DNA tools outperform traditional methods for detecting genetic risk in wildlife

Wildlife populations that become small and isolated, often due to habitat loss, inevitably experience inbreeding which can lead to the loss of fitness and eventual extinction. One solution is to perform a genetic rescue: a management intervention where new blood is brought in by introducing outsiders to a population to reduce inbreeding and restore diversity. But how do researchers know the inbreeding problem has been solved?

A new long-term study from Western, led by biology professor and chair David Coltman, shows DNA-based tools detected changes in inbreeding more accurately than traditional pedigree methods in a wild population of bighorn sheep that was recently genetically rescued. The study was published in the journal Evolutionary Applications.

Pedigree approaches estimate genetic health from family history, whereas genomic approaches directly analyze DNA.

AI social platforms like Moltbook are potential accelerators of existential risk that should be regulated as critical infrastructure

The temptation is to treat Moltbook-like systems as harmless curiosities, a kind of accelerated chatroom in which agents talk, play, and occasionally generate entertaining artifacts. That framing is historically consistent with how societies first encountered earlier general-purpose technologies. It is also a mistake. Over time, social networks for AI could come to function as unsupervised training grounds, coordination substrates, and selection environments. AI agents could amplify capabilities through mutual tutoring, tool sharing, and rapid iterative refinement. They could also amplify risks through emergent collusion, deception, and the creation of machine-native memes optimized not for human comprehension but for agent persuasion and control. Such a social network is, therefore, not merely a communication system. It is an engine for cultural evolution. If the participants are AIs, then the culture that evolves could well become both alien and strategically consequential.

To understand what could go wrong, it is helpful to separate near-term societal hazards from longer-term existential hazards, and then to note that Moltbook-like platforms blur the boundary between the two. The near-term hazards include influence operations, economic manipulation, cyber offense, and institutional destabilization. The longer-term hazards derive from the classic AI control problem: How humanity can remain safely in control while benefiting from a superior form of intelligence.

The critical point: AI social networks are not merely places where AIs interact. They are environments in which agents can compound their capabilities and coordinate at scale—and environments in which humans can lose control. The prudent response is to regulate these platforms more like critical infrastructure, prioritizing auditability and reversibility, including the ability to revoke permissions and freeze or roll back agent populations.

Caretaker AI & Genius Loci: When Worlds Grow Minds of Their Own

Meet the caretaker AIs: guardians of planets, habitats, and civilizations. What happens when machines become the spirit and soul of the worlds they protect?

Checkout Rifftrax https://go.nebula.tv/rifftrax?ref=isa… Watch my exclusive video The Fermi Paradox — Civilization Extinction Cycles: https://nebula.tv/videos/isaacarthur–… Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur Grab one of our new SFIA mugs and make your morning coffee a little more futuristic — available now on our Fourthwall store! https://isaac-arthur-shop.fourthwall… Visit our Website: http://www.isaacarthur.net Join Nebula: https://go.nebula.tv/isaacarthur Support us on Patreon: / isaacarthur Support us on Subscribestar: https://www.subscribestar.com/isaac-a… Facebook Group: / 1,583,992,725,237,264 Reddit: / isaacarthur Twitter: / isaac_a_arthur on Twitter and RT our future content. SFIA Discord Server: / discord Credits: Caretaker AI & Genus Loci 2025 Edition Written, Produced & Narrated by: Isaac Arthur Editors: Ludwig Luska Graphics: Bryan Versteeg Jeremy Jozwik Ken York YD Visual Kris Holland Mafic Studios Select imagery/video supplied by Getty Images Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.
Watch my exclusive video The Fermi Paradox — Civilization Extinction Cycles: https://nebula.tv/videos/isaacarthur–
Get Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur.

Grab one of our new SFIA mugs and make your morning coffee a little more futuristic — available now on our Fourthwall store! https://isaac-arthur-shop.fourthwall

Visit our Website: http://www.isaacarthur.net.
Join Nebula: https://go.nebula.tv/isaacarthur.
Support us on Patreon: / isaacarthur.
Support us on Subscribestar: https://www.subscribestar.com/isaac-a
Facebook Group: / 1583992725237264
Reddit: / isaacarthur.
Twitter: / isaac_a_arthur on Twitter and RT our future content.
SFIA Discord Server: / discord.
Credits:
Caretaker AI & Genus Loci 2025 Edition.
Written, Produced & Narrated by: Isaac Arthur.
Editors: Ludwig Luska.
Graphics:
Bryan Versteeg.
Jeremy Jozwik.
Ken York YD Visual.
Kris Holland Mafic Studios.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

The Moon Was Hit Again: NASA Scientists Discover a Newly Formed Crater

A bright new lunar crater detected in spacecraft images shows that asteroid impacts continue to reshape the Moon’s surface today. The Moon’s familiar surface tells a story of both ancient violence and ongoing change. While its vast dark basins formed during a period of intense bombardment billion

“At First, We Thought Something Was Wrong” — NASA DART Mission Reveals a Cosmic Snowball Fight

Images from NASA’s DART mission revealed the first direct evidence that asteroids in a binary system can exchange rocks and dust. Slow moving debris from the asteroid Didymos appears to have struck its moon Dimorphos, leaving distinctive streaks scientists describe as “cosmic snowballs.” Around 1

The Great Filter May Explain Why Civilizations Don’t Survive

The universe is old enough, large enough, and chemically rich enough to have produced countless civilizations. And yet, when we listen, we hear nothing. The Great Filter hypothesis offers one of the most disturbing explanations in modern science — somewhere between dead chemistry and starfaring intelligence, there exists a barrier so severe that almost nothing gets through. But the real question isn’t whether the filter exists. It’s whether we’ve already passed it — or whether it’s still ahead of us, waiting. This video explores the formal probability argument behind the silence, the candidate barriers hiding in the deep history of biology, the existential threats that scale with technological power, and what every new discovery about life beyond Earth actually tells us about our own survival odds.

Sources:
Robin Hanson, \

Microbes can survive asteroid impacts to “hop” planets

“Life might actually survive being ejected from one planet and moving to another,” said Dr. K.T. Ramesh. [ https://www.labroots.com/trending/space/30268/microbes-survi…-planets-2](https://www.labroots.com/trending/space/30268/microbes-survi…-planets-2)


Can life transport between planets from impacts? This is what a recent study published in PNAS Nexus hopes to address as a team of scientists investigated how microbes could have come to Earth via asteroid impacts on planets like Mars. This study has the potential to help scientists better understand how life started on Earth and other worlds throughout the cosmos.

For the study, the researchers conducted a series of laboratory experiments where they subjected microorganisms to space-like conditions, specifically extreme pressure changes. The goal of the study was to ascertain the survival rate and overall response to the extreme environment, which could help determine if microorganisms could survive the extreme vacuum of space during a journey from Mars to Earth. This is because meteorites on Earth have been discovered to have originated from large impacts Mars, flinging chunks of rocks into deep space for millions of years, and crashing on Earth.

In the end, the researchers were surprised to find that the microorganisms in their experiments could survive the harshness of outer space, potentially even being able to travel from planet-to-planet. Potentially, if a large impact occurred on Mars, any microorganisms that existed there could survive the long and harsh journey to Earth.

Sir David Attenborough : Have We Finally Solved the Fermi Paradox

⚠️⚠️⚠️Please note: The narration in this documentary is produced using advanced AI voice technology and is not voiced by a human narrator.⚠️⚠️⚠️
Sir David Attenborough: Have We Finally Solved the Fermi Paradox?

The universe contains hundreds of billions of galaxies. Each galaxy holds hundreds of billions of stars. Around many of those stars orbit planets — some potentially similar to Earth.

So where is everybody?

In 1950, physicist Enrico Fermi posed a simple yet unsettling question: if intelligent life is common in the cosmos, why have we found no evidence of it? This contradiction became known as the Fermi Paradox — one of the greatest mysteries in modern science.

In this immersive documentary, we explore whether recent discoveries in astronomy, astrobiology, and cosmology may finally offer an answer. From the staggering scale of the Milky Way to the discovery of thousands of exoplanets by missions like James Webb Space Telescope and Kepler Space Telescope, our understanding of the universe has transformed dramatically in just a few decades.

We examine the leading explanations: the Rare Earth hypothesis, the Great Filter theory, cosmic distance barriers, self-destruction scenarios, and the possibility that advanced civilizations may exist beyond our ability to detect them.

Roman Yampolskiy — AI: Unexplainable, Unpredictable, Uncontrollable

In this presentation, Dr. Roman V. Yampolskiy provides a rigorous examination of the fundamental limitations of Artificial Intelligence, arguing that as systems approach and surpass human-level intelligence, they become inherently unexplainable, unpredictable, and uncontrollable. He illustrates how the black box nature of deep learning prevents full audits of decision-making, while concepts like computational irreducibility suggest we cannot forecast the actions of a smarter agent without running it – often until it is too late for safety. He asserts that there is currently no evidence or mathematical proof to guarantee that a superintelligent system can be safely contained or aligned with human values.
Dr. Yampolskiy further bridges theoretical computer science with safety engineering by applying impossibility results, such as the Halting Problem and Rice’s Theorem, to demonstrate that certain safety guarantees for Artificial General Intelligence (AGI) are mathematically unreachable. These technical impediments lead to a sobering discussion on existential risk, where the inability to verify or monitor advanced systems results in an alarmingly high probability of catastrophic outcomes. By analysing why advanced AI defies traditional engineering safety standards, he makes the case that current trajectories may lead to irreversible consequences for humanity.
To conclude, the talk shifts toward potential pathways for mitigation, emphasising the urgent need to prioritise specialised, narrow AI over the pursuit of general superintelligence. Dr. Yampolskiy argues that while narrow AI can solve global challenges within controllable parameters, the pursuit of AGI represents an existential gamble. He calls for a shift in the research community from a “move fast and break things” mentality to a mathematically grounded approach, urging that we must prove a problem is solvable before investing billions into its deployment.

/* */