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Research led by the University of Tartu has revealed a potential link between industrial air pollution and localised snowfall. Observations using both satellite and ground-based radar indicate that industrial facilities across North America, Europe, and Asia may trigger local snowfall by causing ice to form in supercooled clouds. This phenomenon, observed near factories such as copper smelters and coal power plants, results from the release of aerosol particles that interact with clouds in specific atmospheric conditions. Dr V. Toll, an associate professor at the University of Tartu, highlighted the importance of cross-disciplinary research in identifying this process.

Aerosols and Snow Formation

Industries, especially those involved in cement production, metallurgy, and fossil fuel combustion, emit aerosols—tiny solid and liquid particles that significantly affect cloud properties. Aerosols have been shown to increase the number of cloud droplets, thereby brightening clouds and reducing solar radiation reaching the Earth’s surface. However, the new findings suggest that, in certain conditions, these particles also trigger the freezing of liquid cloud droplets, resulting in snowfall downwind from industrial sites. Weather radar images taken near industrial locations in Canada and Russia show unique plumes of snowfall, a discovery corroborated by satellite data indicating concurrent reductions in cloud cover.

Supercooling in Cloud Droplets

Cloud droplets can remain in liquid form at temperatures as low as -40 degrees Celsius in a process known as supercooling. Only when suitable particles, such as anthropogenic aerosols, are present can these droplets freeze at temperatures between zero and -40 degrees Celsius. Toll’s team suggests that aerosol emissions, combined with heat and water vapour from industrial facilities, are likely inducing ice formation within clouds, resulting in snowfall. While this phenomenon has been observed at specific sites, it is uncertain whether similar mechanisms affect cloud formation on larger scales.

Further Research Required

The study, published in Science, underscores the need for further investigation into the role of different aerosol types in ice nucleation processes. Future research will aim to understand whether these localised snowfall events have broader atmospheric impacts and to identify the types of aerosol emissions most effective in initiating ice formation in supercooled clouds.

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Scientists Revive Dire Wolves Using Ancient DNA and Modern Gene Editing

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Scientists Revive Dire Wolves Using Ancient DNA and Modern Gene Editing

Three live dire wolf pups have been born using reconstructed DNA. The extinct species had last roamed North America around 12,500 years ago. The milestone was reached by a Dallas-based biotech firm that focuses on genetic conservation. Ancient DNA samples from fossilised remains were analysed. Modern gene-editing tools were used to mimic key characteristics of the extinct predator. These pups were brought to life by implanting modified embryos into domestic dog surrogates. The young wolves have been named Romulus, Remus and Khaleesi.

Ancient DNA edited in lab to recreate species

According to a study shared by Colossal Biosciences, DNA samples had been collected from two ancient dire wolf fossils. One was a 13,000-year-old tooth, while the other was a 72,000-year-old skull fragment. These fragments were compared to modern wolf relatives and grey wolves were chosen for DNA alteration because of their evolutionary proximity. Gene sequences that were found only in dire wolves were isolated. These were introduced into the DNA of grey wolves through targeted editing.

Cloning technique used to implant embryos

The altered genetic material was inserted into grey wolf egg cells after removing their original nuclei. These prepared cells were placed inside domestic dogs. Each surrogate received multiple embryos. Interestingly, only one embryo survived in each of the first two dogs. Both gave birth by caesarean section, while the third pup was born in a second round of implantation.

Physical traits match fossil record

The new pups have been observed to develop features consistent with known dire wolf fossils. Thick white coats, larger teeth and body structure have been reported. These results came from identifying changes in 14 genes. The gene edits were introduced using CRISPR technology.

The same company had previously cloned red wolves. The team had also created “woolly mice” as part of a mammoth revival effort. The successful dire wolf birth marks a new phase in gene-driven species restoration.

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Panama Tree Shocks Scientists With Lightning-Based Defense

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Panama Tree Shocks Scientists With Lightning-Based Defense

Lightning is commonly considered a sign of disaster in the forest, as lightning kills or damages trees. On the lowlands of Panama, the tonka bean tree (Dipteryx oleifera) might have evolved to capitalize on this natural occurrence. New research suggests that lightning strikes could help the tonka bean tree (Dipteryx oleifera). According to Live Science research, these trees not only survive these electrical interactions unharmed, but the lightning also harms their competitors and the parasitic vines that cling to the tonka bean plants.

The researchers published their findings on March 26 in the journal New Phytologist. Lightning is a major cause of tree mortality in tropical forests, particularly among the largest and oldest trees, which play important roles in carbon storage and biodiversity.

Lightning as a Canopy Weapon

On average, each lightning hit destroyed over 2.4 tons (2 metric tons) of adjacent tree biomass and approximately 80 percent of the lianas (parasitic vines) that plagued the tonka bean canopy. As per Gora’s assumption, the key to these trees’ lightning resistance comes from their physical structure.

A few studies describe the tree as having strong internal conductivity, letting lightning current flow through without building up damaging heat like a well-insulated wire. Because they tend to grow large — up to 130 feet (40 meters)—and live for centuries, a single tonka bean tree is estimated to be struck at least five times after reaching maturity. Each strike helps to clear out vines and competitors, opening up the canopy to help it thrive.

Ecological Impact and Evolutionary Marvel

Gregory Moore, a horticulturalist from the University of Melbourne who was not involved in the study, thinks the results will apply to other species. “The sort of work could also apply to other tree-dominated plant communities, such as woodlands or low woodlands where trees are widely separated, so it’s nothing like a tropical forest,” he said, adding that other tall trees are also possible targets of lightning strikes.

More Than Just a Tree

“We have long known that some trees can withstand multiple lightning strikes,” Moore said, noting that some tall trees survive Australian bushfires and grow up towering over their neighbors, making them prime targets for lightning strikes. “They are often referred to as stags because the top of the crown has been blown out, but they can survive for centuries after being hit by lightning,” he added.

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NASA’s Jonny Kim Heads to Space With Russian Crew on Soyuz MS-27

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NASA’s Jonny Kim Heads to Space With Russian Crew on Soyuz MS-27

On April 8, 2025, an American-Russian crew launched a combined spaceflight mission early Tuesday. The Soyuz MS-27 was launched from Kazakhstan’s Baikonur Cosmodrome. NASA astronaut Dr. Jonny Kim, a former U.S. Navy SEAL and doctor, along with Russian cosmonauts Alexey Zubritsky and Sergey Ryzhikov are the part of the crew. In what will be Kim’s maiden voyage, the spacecraft blasted off on a Soyuz 2.1a rocket at 1:47 a.m. EDT and will spend eight months on board the ISS.

Soyuz MS-27 docks after brief orbital journey

According to NASA’s official launch briefing, the Soyuz MS-27 capsule is scheduled to finish a two-orbit approach before docking with the ISS’s Prichal module at around 5:04 a.m. EDT. The crew will join Commander Alexey Ovchinin’s Expedition 72 after a successful docking and hatch opening. Currently, a combination of Japanese, American and Russian astronauts are stationed there.

Expanded crew to support multiple mission objectives

As outlined by Roscosmos and NASA mission updates, the three new arrivals, namely, Ryzhikov, Zubritsky, and Kim, will support various science experiments, maintenance tasks, and visiting vehicle operations. There are many spacewalks that are also planned. Kim had expressed his desire to participate in a spacewalk in an interview with NASA TV before launch. He described the physical and mental challenges as taxing.

Background of the crew and symbolic mission details

According to statements made to collect, Kim, aged 41, credited his diverse career path to opportunity and timing. He becomes the third U.S. Navy SEAL to enter orbit. Ryzhikov, a 50-year-old veteran cosmonaut, begins his third mission, while 32-year-old Zubritsky embarks on his first. The mission’s call sign is “Favour,” and the crew’s patch honours two key milestones in space history: the 60th anniversary of the first spacewalk and 50 years since the Apollo-Soyuz Test Project.

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