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The best hydrogen for heavy-duty transport is locally produced and green, say researchers

If trucks ran on hydrogen instead of fossil fuels, carbon dioxide emissions from heavy-duty road transport could be significantly reduced. At the same time, a new study from Chalmers University of Technology in Sweden shows that differences in how the gas is produced, distributed and used greatly affect its climate benefits.

Locally produced green hydrogen is the best option for the climate—with the additional benefit of enabling all countries to become self-sufficient in energy and fuel, even in times of crisis and war.

Heavy-duty road transport currently accounts for one fifth of global oil consumption and, in the EU, heavy-duty diesel trucks are the largest source of emissions of the transport-related greenhouse gas carbon dioxide. In the future, the need for road transport is expected to increase, and consequently also the sector’s demand for fossil fuels from oil.

Flu is rising rapidly, driven by a new variant. Here’s what to know

Flu is rising rapidly across the U.S., driven by a new variant of the virus—and cases are expected to keep growing with holiday travel.

That variant, known as “subclade K,” led to early outbreaks in the United Kingdom, Japan and Canada. In the U.S., flu typically begins its winter march in December. On Tuesday, the Centers for Disease Control and Prevention reported high or very high levels of illness in more than half the states.

The CDC estimated there have been at least 7.5 million illnesses, 81,000 hospitalizations and 3,100 deaths from flu so far this season. That includes at least eight child deaths—and is based on data as of Dec. 20, before major holiday gatherings.

This Common Blood Pressure Drug Boosts Lifespan And Slows Aging in Animals

The hypertension drug rilmenidine has been found to slow aging in worms – an effect that, if it translates to humans, could one day help us live longer and stay healthier in old age.

Rilmenidine appears to mimic the effects of caloric restriction on a cellular level, and reducing available energy while maintaining nutrition has been shown to extend lifespans in several animal models.

Whether this translates to human biology, or is a potential risk to our health, is a topic of ongoing debate. Finding ways to achieve the same benefits without the costs of extreme calorie cutting could lead to new ways to improve health in old age.

SpaceX IPO, Robotaxi Rules, and the Regulatory Wall Facing Elon Musk

Regulatory hurdles, rather than engineering challenges, are the main obstacles hindering the progress and success of Elon Musk’s companies, including SpaceX and Tesla.

## Questions to inspire discussion.

SpaceX Strategic Direction.

🚀 Q: Will SpaceX IPO due to defense contractor requirements? A: SpaceX’s expanding role as a defense contractor through projects like Star Shield increases IPO likelihood, as military requirements typically favor public companies for transparency and accountability according to Palmer Luckey.

🛰️ Q: How is SpaceX enabling freedom of information in restricted regions? A: Starlink has provided unfiltered internet access to Iranians since 2022 in coordination with the US government, successfully resisting signal jamming attempts and enabling freedom of information during protests.

💰 Q: What investment level is the space economy attracting in 2025? A: The space economy attracted $2.2 trillion in private investment in 2025, driven by SpaceX’s success, but viability of speculative models like space hotels and mining depends entirely on Starship’s cost and reliability.

Continue reading “SpaceX IPO, Robotaxi Rules, and the Regulatory Wall Facing Elon Musk” | >

Is There A Simple Solution To The Fermi Paradox?

Use code PBS to get 15% off all Hoverpens and free shipping to most countries for the first 48 hours, 10% off after that. North America / UK / Australia / International: https://bit.ly/pbs_novium.
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Around 2 billion years ago, life had plateaued in complexity, ruined the atmosphere, and was on the verge of self-annihilation. But then something strange and potentially extremely lucky happened that enabled endless new evolutionary paths. The first eukaryote cell was born. This may also explain why there are no aliens.

Patreon Interview with Dr. Matt Caplan.
• How Black Holes Feast — Patreon Interview…

Cool world episode: • the odds of life — THIS CHANGED MY MIND

Sign Up on Patreon to get access to the Space Time Discord!
/ pbsspacetime.

Check out the Space Time Merch Store.

Continue reading “Is There A Simple Solution To The Fermi Paradox?” | >

Stem cells and adult neurogenesis

The brain has a remarkable ability to learn how to discriminate different stimuli. This video shows the work that is done within the LabEx Revive framework (www.revive.fr) in the laboratory directed by Prof. Pierre-Marie Lledo. Using mice and stem cells as a model, they have shown how adult neurogenesis is decreased or stimulated depending on different factors.

Learn more about this crucial area of stem cell research at: www.revive.fr, https://research.pasteur.fr/en/member… more about stem cells in general at www.eurostemcell.org.

Credits:
This video was made possible by the LabEx Revive (www.revive.fr), which is a selected project of the ANR \.

A Powerful New Neurotech Tool for Augmenting Your Mind | Conor Russomanno | TED

In an astonishing talk and tech demo, neurotechnologist Conor Russomanno shares his work building brain-computer interfaces that could enable us to control the external world with our minds. He discusses the quickly advancing possibilities of this field — including the promise of a \.

Johns Hopkins Scientists Identify Key Brain Protein That May Slow Alzheimer’s

Researchers at Johns Hopkins Medicine report that findings from a new study funded by the National Institutes of Health are helping to identify a promising new biological target for Alzheimer’s disease. The focus is a protein that produces a crucial gas within the brain.

Studies in genetically engineered mice show that the protein Cystathionine γ-lyase, also known as CSE, plays an essential role in forming memories, says Bindu Paul, M.S., Ph.D., an associate professor of pharmacology, psychiatry and neuroscience at the Johns Hopkins University School of Medicine who led the research. CSE is best known for generating hydrogen sulfide, the gas responsible for the smell of rotten eggs, but the new findings highlight its importance in brain function.

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