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Every day, tons of CO₂ are released into the atmosphere, but what if we could transform it using clean energy? This is the question explored in a recent Politecnico di Milano study, which was featured on the cover of the journal ACS Catalysis. The research focuses on a process that transforms carbon dioxide and hydrogen into methane using carefully engineered nickel nanoparticles.

Entitled “Deciphering Size and Shape Effects on the Structure Sensitivity of the CO₂ Methanation Reaction on Nickel,” the study by Gabriele Spanò, Matteo Ferri, Raffaele Cheula, Matteo Monai, Bert M. Weckhuysen and Matteo Maestri investigates how the size and shape of nickel nanoparticles influence the rate at which is converted into methane.

Researchers at the Laboratory of Catalysis and Catalytic Processes (LCCP) at Politecnico di Milano’s Department of Energy are tackling a key climate challenge: reusing CO₂ to produce sustainable fuels. The LCCP is an internationally recognized leader in , driving forward practical solutions for cleaner energy.

In the grand cosmology of Star Trek, the Prime Directive stands as both a legal doctrine and a quasi-religious tenet, the sacred cow of Federation ethics. It is the non-interference policy that governs Starfleet’s engagement with pre-warp civilizations, the bright line between enlightenment and colonial impulse. And yet, if one tilts their head and squints just a little, a glaring inconsistency emerges: UFOs. Our own real-world history teems with sightings, leaked military footage, close encounters of the caffeinated late-night internet variety — yet in the Star Trek universe, these are, at best, unacknowledged background noise. This omission, this gaping lacuna in Trek’s otherwise meticulous world-building, raises a disturbing implication: If the Prime Directive were real, then the galaxy is full of alien civilizations thumbing their ridged noses at it.

To be fair, Star Trek often operates under what scholars of narrative theory might call “selective realism.” It chooses which elements of contemporary history to incorporate and which to quietly ignore, much like the way a Klingon would selectively recount a battle story, omitting any unfortunate pratfalls. When the series does engage with Earth’s past, it prefers a grand mythos — World War III, the Eugenics Wars, Zephram Cochrane’s Phoenix breaking the warp barrier — rather than grappling with the more untidy fringes of historical record. And yet, our own era’s escalating catalog of unidentified aerial phenomena (UAPs, as the rebranding now insists) would seem to demand at least a passing acknowledgment. After all, a civilization governed by the Prime Directive would have had to enforce a strict policy of never being seen, yet our skies have been, apparently, a traffic jam of unidentified blips, metallic tic-tacs, and unexplained glowing orbs.

This contradiction has been largely unspoken in official Trek canon. The closest the franchise has come to addressing the issue is in Star Trek: First Contact (1996), where we see a Vulcan survey ship observing post-war Earth, waiting for Cochrane’s historic flight to justify first contact. But let’s consider the narrative implication here: If Vulcans were watching in 2063, were they also watching in 1963? If Cochrane’s flight was the green light for formal engagement, were the preceding decades a period of silent surveillance, with Romulan warbirds peeking through the ozone layer like celestial Peeping Toms?

The company says that unlike the large amounts of fuel required for a chemical rocket, the relative tiny amounts of the deuterium and helium-3 fuel mix required means “a spacecraft would launch with a fixed supply, sufficient for missions like Pluto in four years, with no mid-flight refuelling needed”. (Repost)


The Sunbird nuclear fusion rocket concept has the potential to more than halve the time to travel to Mars and cut travel time to Pluto to about four years, the UK’s Pulsar Fusion says.

The company says its in-house team has been working on the project for a decade and it is “rapidly advancing toward in-orbit testing, with components of the system’s power supply set for demonstration later this year” and then demonstrated in orbit in 2027. They hope for a production-ready Sunbird in the early 2030s.

The Sunbird concept is for the fusion-powered ‘tugs’ to be permanently based in space, able to dock on to spacecraft and propel them at high speed over vast distances. Pulsar Fusion says it foresees a compact nuclear fusion engine providing both thrust and electrical power for spacecraft, including as much as 2 MW of power on arrival at a destination.

PFOS, also known as “forever chemicals,” are synthetic compounds popular for several commercial applications, like making products resistant to stains, fire, grease, soil and water. They have been used in non-stick cookware, carpets, rugs, upholstered furniture, food packaging and firefighting foams deployed at airports and military airfields.

PFOS (perfluorooctane sulfonate or perfluorooctane ) are part of the larger class of forever chemicals called PFAS (per-and polyfluoroalkyl substances.) Both types have been linked to a variety of health issues, including , immune system malfunction, developmental issues and cancer.

Because of their widespread use, PFOS are found in soil, agricultural products and drinking water sources, presenting a health risk. Xiaoguang Meng and Christos Christodoulatos, professors at the Department of Civil, Environmental and Ocean Engineering at Stevens Institute of Technology, and Ph.D. student Meng Ji working in their lab, wanted to identify the most efficient way to remove these toxins from the water.

Skeletal editing is a modern approach to chemical synthesis. By making precise alterations at the atomic level, researchers are able to directly convert existing drug scaffolds into new, biologically relevant compounds.

A team led by chemist Prof Armido Studer from the University of Münster has developed a new strategy based on this technique to swap with nitrogen atoms (“C-to-N atom swapping”). The process functions within indole and benzofuran frameworks. These chemical structures, which contain two molecular rings consisting mainly of carbon, are common building blocks of pharmaceuticals and natural products.

“This technique expands the synthetic toolbox available for skeletal editing,” explains doctoral student Zhe Wang, who carried out most of the experimental work. It represents a step forward in the development of new molecules from established pharmacophores, i.e. the molecular components responsible for pharmacological effects.