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Hello and welcome! My name is Anton and in this video, we will talk about new discoveries about bacterial communication.
Links:
https://www.science.org/doi/10.1126/sciadv.adj1539
https://www.lboro.ac.uk/news-events/news/2025/january/cyanob…formation/
https://en.wikipedia.org/wiki/Prochlorococcus.
https://www.quantamagazine.org/the-ocean-teems-with-networks…-20250106/
Previous video:

#biology #bacteria #biofilm.

Continue reading “Surprising Bacterial Communication We’ve Never Seen Before” »

Henri Poincarés major work on a theory of the electron is “Sur la dynamique de l’électron”.¹ It is considered, by some, as evidence that Poincaré, more than anyone else in the late 19^th and early 20^th centuries, anticipated Einstein’s 1905 theory of relativity.²

OpenAI says no money changed hands in the collaboration. But because the work could benefit Retro—whose biggest investor is Altman—the announcement may add to questions swirling around the OpenAI CEO’s side projects.

Last year, the Wall Street Journal said Altman’s wide-ranging investments in private tech startups amount to an “opaque investment empire” that is “creating a mounting list of potential conflicts,” since some of these companies also do business with OpenAI.

In Retro’s case, simply being associated with Altman, OpenAI, and the race toward AGI could boost its profile and increase its ability to hire staff and raise funds. Betts-Lacroix did not answer questions about whether the early-stage company is currently in fundraising mode.

In a study published in the Astrophysical Journal, a team of researchers led by Kristen McQuinn, a scientist at the Space Telescope Science Institute and an associate professor in the Department of Physics and Astronomy at the Rutgers University-New Brunswick School of Arts and Sciences, has reported finding that Leo P, a small galaxy and a distant neighbor of the Milky Way, “reignited,” reactivating during a significant period on the timeline of the universe, producing stars when many other small galaxies didn’t.

By studying galaxies early in their formation and in different environments, astronomers said they may gain a deeper understanding of the universe’s origins and the fundamental processes that shape it.

McQuinn and other members of the research team studied Leo P through NASA’s James Webb Space Telescope, a space-based apparatus that features a large, segmented mirror and an expansive sunshield, both of which enable it to capture detailed images of distant celestial objects.

Summary: A comprehensive study mapped neuronal IL-1R1 (nIL-1R1) expression in the mouse brain, highlighting its role in sensory processing, mood, and memory regulation. Researchers found that neurons expressing IL-1R1 integrate immune and neural signals, revealing connections between inflammation and brain disorders like depression and anxiety.

The study pinpointed key regions, such as the somatosensory cortex and hippocampus, where IL-1 signaling influences synapse organization and neural circuit modulation. Notably, neuronal IL-1R1 modifies synaptic pathways without triggering inflammation, suggesting distinct functions in the central nervous system.

Have you read on social media about the “once in 396 billion years” planetary alignment happening on Jan. 25? Guess what? Social media is not reliable. Here’s what’s really going on — and why you don’t have to wait.

Four planets are easily visible to the naked eye this month. Next month, for a short period, there will be five. It’s not irregular, not particularly rare, and certainly not some kind of weird alignment—as the online hype would have you believe—but it is a spectacular sight. But is it one of the best stargazing and astronomy sights of 2025?

Here’s the truth about the so-called “planet parade” and when you can see it as its best all this month and during February.

Scientists from Delft, Vienna, and Lausanne discovered that the protein machines that shape our DNA can switch direction. Until now, researchers believed that these so-called SMC motors that make loops into DNA could move in one direction only. The discovery, which is published in Cell, is key to understanding how these motors shape our genome and regulate our genes.

“Sometimes, a cell needs to be quick in changing which genes should be expressed and which ones should be turned off, for example in response to food, alcohol or heat. To turn genes off and on, cells use Structural Maintenance of Chromosomes (SMC) motors that act like switches to connect different parts of DNA,” first author Roman Barth explains.

“However, SMC machines don’t naturally know which parts to connect. They simply load somewhere on the DNA and start shaping it into a loop until they reach a point where they are forced to stop. That’s why they rely heavily on the ability to explore both sides of the DNA to find the right stop signs.”

At Argonne National Laboratory, scientists have leveraged the Frontier supercomputer to create an unprecedented simulation of the universe, encompassing a span of 10 billion light years and incorporating complex physics models.

This monumental achievement allows for new insights into galaxy formation and cosmic evolution, showcasing the profound capabilities of exascale computing.

Continue reading “The Biggest Simulation Ever: Frontier Supercomputer Models the Universe” »

MIT’s new robotic insects, inspired by bees, achieve longer flights and enhanced precision, paving the way for autonomous pollination tasks.