Key Moments
A Camera With Only One Pixel, Better Phone Memory, Carbon Offsetting Woes & More
Sabine HossenfelderKey Moments
Superconductors, carbon offsets, cosmic fields, robot arms, clean tech, and phone memory advances.
Key Insights
Researchers are making progress in understanding how pressure affects superconductivity, potentially bringing room-temperature superconductors closer.
An investigation suggests that carbon offset credits from Verra may be largely ineffective, potentially exacerbating climate change.
New experiments provide evidence that cosmic magnetic fields may spontaneously arise from temperature differences in plasma, a phenomenon known as Weibel instability.
A new robotic arm with an oscillating needle can precisely manipulate fluids at a microscopic level, useful for lab work.
The International Energy Agency predicts significant growth in clean technology by 2030, but warns of supply chain challenges and the need for project execution.
Advances in materials science are leading to new types of memory (MRAM) that are faster and retain data without power, and a faster single-pixel camera has been developed.
New research suggests rats may not have been the primary vectors for the Black Death, proposing wildlife from Asia and person-to-person contact as more likely spread mechanisms.
Brilliant.org offers interactive science and math courses, with the creator having a new quantum mechanics course available.
THE QUEST FOR ROOM-TEMPERATURE SUPERCONDUCTORS
The holy grail of condensed matter physics is a room-temperature superconductor. These materials conduct electricity with zero resistance and expel magnetic fields, offering 100% efficiency and eliminating the need for massive cooling systems. Current superconductors require extremely low temperatures, making them impractical for widespread use. While a 2020 paper claimed a breakthrough, it was later retracted due to data irregularities. Recent research from Leipzig University has shed light on how pressure influences superconductivity in cu'prates by examining electron distribution, suggesting a path towards higher transition temperatures and potentially a room-temperature superconductor in the coming years.
CARBON OFFSETS AND THE REALITY OF CARBON CAPTURE
An investigation into Verra, a leading provider of rainforest carbon offsets, suggests these credits may be largely worthless, potentially worsening climate change. Verra sells credits based on preventing deforestation, but studies indicate that deforestation is only halted in small areas, leading to claims of overstating project effectiveness by up to 400%. Verra disputes these findings. Meanwhile, a report on atmospheric carbon dioxide removal highlights a significant gap between global needs and current actions, with few plans to scale up necessary carbon capture methods, beyond capturing emissions at the source.
UNLOCKING THE MYSTERY OF COSMIC MAGNETIC FIELDS
The origin of weak yet pervasive cosmic magnetic fields remains a mystery. These fields, spanning intergalactic space, are stronger than expected based on current theories. New research from UCLA supports the hypothesis that magnetic fields can arise spontaneously in plasma from temperature differences, a process known as Weibel instability. Researchers successfully generated and measured this specific instability in the lab, which converts temperature differences into magnetic field energy through plasma self-organization. This experimental validation is a crucial step towards understanding their cosmic origins.
ADVANCEMENTS IN ROBOTICS AND MEMORY TECHNOLOGY
ETH researchers have developed a novel robot arm equipped with a microscopic oscillating needle capable of manipulating fluids at ultrasonic frequencies. This technology can mix liquids, pump fluids through micro-channels, and even capture particles like cells or embryos. The system's ability to create complex vortex patterns with multiple needles promises to automate delicate lab tasks. Concurrently, advancements in memory technology are underway, with MRAM showing promise for both fast working memory and non-volatile storage, offering significantly lower access times than traditional DRAM. The University of Tokyo has also set a new record for MRAM switching speeds using antiferromagnets, potentially enabling trillion cycles per second.
THE AGE OF CLEAN TECHNOLOGY AND ITS CHALLENGES
The International Energy Agency (IEA) projects significant growth in clean technology by 2030, with US green manufacturing jobs potentially doubling to 14 million and the global market reaching $650 billion if climate pledges are met. However, the IEA also emphasizes the need for supply chain diversification to prevent price increases, citing a 10% rise in EV battery prices in 2022 due to raw material costs. Furthermore, a significant gap exists between announced solar manufacturing projects and those under construction, indicating a need for more concrete action to realize the clean tech transition.
REVISITING THE BLACK DEATH AND INNOVATIONS IN IMAGING
New research from the University of Oslo challenges the long-held belief that rats were the primary carriers of the Black Death. By analyzing climate data, the study suggests that European rat populations could not sustain the plague bacteria. Instead, the plague likely spread through repeated introduction from Asian wildlife and directly between people, explaining its rapid dissemination during the second pandemic. Separately, a Canadian team has developed the fastest single-pixel camera to date, capable of 100 frames per second for real-time streaming, with potential applications in specialized imaging where compactness and high dynamic range are crucial, despite lower resolution.
Mentioned in This Episode
●Supplements
●Software & Apps
●Tools
●Companies
●Organizations
●Books
●People Referenced
Common Questions
The holy grail of condensed matter physics is room temperature superconductors. These are materials that conduct electricity with zero resistance, but currently require extremely low temperatures to function, hindering widespread application.
Topics
Mentioned in this video
A scientific journal where research on room temperature superconductors was published and later retracted.
The institution where new research shed light on how pressure affects the transition to superconductivity.
Published an investigation suggesting rainforest carbon offsets may be worthless.
Published an investigation suggesting rainforest carbon offsets may be worthless.
Conducted one of the studies that found Verra's carbon offset projects were not effectively preventing deforestation.
Authored a report on the state of atmospheric carbon dioxide removal, indicating grim news.
Researchers from this university succeeded in measuring the Weibel instability in a laboratory setting.
Released a report predicting a significant growth in the clean technology sector and renewable energy adoption.
Where researchers achieved an experimental breakthrough in MRAM technology using antiferromagnets.
Researchers from this university found evidence suggesting rats may not have been the primary spreaders of the Black Death.
Used by researchers to demonstrate the capability of the oscillating needle robot to capture particles in liquid.
Mentioned as one of the raw materials whose price increase contributed to the rise in battery prices for electric vehicles.
Dynamic Random Access Memory, the current standard for working memory in PCs and smartphones, known for its speed but data volatility.
More from Sabine Hossenfelder
View all 54 summaries
7 minBreakthrough In Data Storage Could Store Your Photos for 10000 Years
7 minThe Simulation Hypothesis Gets Scientific Backing
7 minSurprise! Milky Way Might Not Have a Black Hole After All
7 minThe First Moon Landing Wasn’t Apollo — And We Just Found It
Found this useful? Build your knowledge library
Get AI-powered summaries of any YouTube video, podcast, or article in seconds. Save them to your personal pods and access them anytime.
Try Summify free