Science & Technology
Big cats in urban jungle: LA mountain lions, Mumbai leopards
Los Angeles and Mumbai, India, are the world’s only megacities of 10 million-plus people where large felines — mountain lions in one, leopards in the other — thrive by breeding, hunting and maintaining territory within urban boundaries.
Long-term studies in both cities have examined how the big cats prowl through their urban jungles, and how people can best live alongside them — lessons that may be applicable to more places in coming decades, AP reported.
“In the future, there’s going to be more cities like this, as urban areas further encroach on natural habitats,” said biologist Audra Huffmeyer, who studies mountain lions at the University of California, Los Angeles. “If we want to keep these large carnivores around on the planet, we have to learn to live with them.”
Twenty years ago, scientists in Los Angeles placed a tracking collar on their first cat, a large male mountain lion dubbed P1, that defended a wide swath of the Santa Monica Mountains, a coastal range that lies within and adjacent to the city.
“P1 was as big as they get in southern California, about 150 pounds,” said Seth Riley, a National Park Service ecologist who was part of the effort. “These dominant males are the ones that breed — they won’t tolerate other adult males in their territory.”
With GPS tracking and camera traps, the scientists followed the rise and fall of P1’s dynasty for seven years, through multiple mates and litters of kittens. “2009 was the last time we knew anything about P1,” said Riley. “There must have been a fight. We found his collar, blood on a rock. And never saw him again. He was reasonably old.”
Since then, Riley has helped collar around 100 more mountain lions in Los Angeles, building a vast database of lion behavior that’s contributed to understanding how much territory the cats need, what they eat (mostly deer), how often they cross paths with people and what may imperil their future, AP reported.
In Mumbai, one of the world’s most densely populated cities, the leopards are packed in, too: about 50 have adapted to a space ideally suited for 20. And yet the nocturnal cats also keep mostly out of sight.
“Because these animals are so secretive, you don’t know much about them. You can’t just observe them,” said Vidya Athreya, director of Wildlife Conservation Society in India and part of a research team that recently fitted five leopards with tracking collars.
The leopards’ core range is centered around Sanjay Gandhi National Park, a protected area boxed on three sides by an urbanized landscape, including a neighborhood that’s home to 100,000 people and nearly a dozen leopards, AP reported.
Researchers tackled specific questions from park managers, such as how the cats cross busy roads near the park.
To get the answer, they collared a big male dubbed Maharaja. They found that it walked mostly at night and traversed over 60 kilometers in about a week, from the park in Mumbai to another nearby. The leopard crossed a busy state highway, using the same spot to pass, on three occasions. It also crossed a railway track.
The path chosen by Maharaja is nearby a new highway and a freight corridor under construction. Researchers said that knowing the big cats’ highway crossing habits can help policy makers make informed decisions about where to build animal underpasses to reduce accidents.
But learning to live alongside cats is not only a matter of infrastructure decisions, but also human choices and education, AP reported.
In Mumbai, Purvi Lote saw her first leopard when she was 5, on the porch of a relative’s home. Terrified, she ran back inside to her mother. But now the 9-year-old says she isn’t as afraid of the big cats.
Like other children, she doesn’t step outdoors alone after dark. Children and even adults travel in groups at night, while blaring music from their telephones to ensure that leopards aren’t surprised. But the most fundamental rule, according to the youngster: “When you see a leopard, don’t bother it.”
Leopards in Mumbai adapted to mainly hunt feral dogs that frequent garbage dumps outside the forest and mostly attacked people when cornered or attacked. But in 2010, 20 people in Mumbai died in leopard attacks, said Jagannath Kamble, an official at Mumbai’s protected forest.
Officials roped in volunteers, nongovernmental groups and the media for a public education program in 2011. Since then, fatalities have dropped steadily and no one has been killed in an attack since 2017, AP reported.
In Los Angeles, there have been no human deaths attributed to mountain lions, but one nonfatal attack on a child occurred in 2021.
Both cities have learned that trying to capture, kill or relocate the cats isn’t the answer, AP reported.
“Relocation and killing makes conflict worse,” said Beth Pratt, California regional director at National Wildlife Federation. “It’s better to have a stable population, than one where hierarchies and territories are disrupted.”
Avoidance is the safest strategy, she said. “These big cats are shy — they tend to avoid human contact as much as they can. They’re really extreme introverts of the animal kingdom.”
Science & Technology
Meta turns off Instagram’s private messaging encryption worldwide
Meta said the decision was based on low user adoption, though critics argue optional privacy tools often see limited use because users must manually activate them.
Instagram has disabled its end-to-end encrypted (E2EE) direct messaging feature worldwide, marking a major reversal by parent company Meta on its previous commitment to stronger user privacy protections.
The move means Instagram users can no longer send ultra-private direct messages protected by E2EE — a security system that allows only the sender and recipient to read messages. Without the feature, Instagram can technically access the content of direct messages, including photos, videos and voice notes.
Meta had previously promoted encryption as “the future is private.” In 2019, CEO Mark Zuckerberg pledged to expand the technology across the company’s platforms.
Facebook Messenger adopted E2EE in 2023, while Instagram introduced it as an optional feature with plans to make it standard.
However, Meta has now abandoned the wider Instagram rollout and updated the app’s terms in March to confirm encrypted messaging would no longer be supported after 8 May 2026.
Meta said the decision was based on low user adoption, though critics argue optional privacy tools often see limited use because users must manually activate them.
The move has divided opinion. Child protection groups, including the NSPCC, welcomed the change, saying encryption can make it harder to detect child grooming and abuse online.
Privacy advocates criticised the decision. Maya Thomas of Big Brother Watch warned the move weakens online privacy protections and could increase pressure on other social media companies to scale back encryption.
End-to-end encryption remains standard on platforms including WhatsApp, Signal, Apple’s iMessage and Google Messages, while other platforms continue to take mixed approaches to private messaging.
Science & Technology
James Webb Telescope captures clearest-ever view of exoplanet’s surface
Astronomers using NASA’s James Webb Space Telescope have obtained the clearest view yet of the surface of a rocky exoplanet, revealing a scorched, atmosphere-free world that scientists say resembles a giant version of Mercury.
The planet, known as LHS 3844 b and nicknamed “Kua’kua,” appears to be a barren, uninhabitable world with extreme temperature swings and no detectable atmosphere, according to a study published this week in Nature Astronomy.
Researchers said the planet’s surface is likely covered in dark volcanic rock and ancient regolith — loose rocky debris formed over billions of years from relentless bombardment by radiation and micrometeorite impacts.
“This planet is not a nice place,” said astronomer Laura Kreidberg, senior author of the study. “It’s a hellish, barren rock — much more similar to Mercury than Earth.”
Located about 49 light-years away, LHS 3844 b orbits a small red dwarf star and completes a full orbit every 11 hours. The planet is tidally locked, meaning one side permanently faces its star while the other remains in darkness — similar to how the Moon always shows the same face to Earth.
Scientists found the planet’s dayside reaches roughly 1,340 degrees Fahrenheit (725 degrees Celsius), while the nightside showed almost no detectable heat.
Using Webb’s infrared instruments, researchers were able to directly analyze light coming from the planet’s surface — a major breakthrough for exoplanet science.
“Different rocks have different spectral fingerprints,” said lead author Sebastian Zieba. “Dark volcanic rocks like basalt matched our observations much better than brighter rocks like granite.”
The findings mark a new phase in exoplanet research, shifting beyond atmospheric studies toward direct analysis of alien geology and surface composition.
Since becoming operational in 2022, the Webb telescope has transformed scientists’ understanding of planets beyond the solar system, helping identify atmospheric chemistry, weather patterns and now even the nature of distant planetary surfaces.
Researchers said the absence of an atmosphere on LHS 3844 b means there is little protection from stellar radiation and virtually no possibility of liquid water — a key ingredient for life.
“So overall, this is almost certainly not a habitable world,” Zieba said.
Science & Technology
Afghanistan launches first 5G trial in Kabul to boost telecom services
According to ministry spokesperson Enayatullah Alokozai, AWCC has upgraded 74 telecom antennas in Kabul to 5G on a trial basis.
Afghanistan has launched its first-ever 5G telecommunications trial in Kabul, marking a major milestone in efforts to modernise the country’s digital infrastructure.
The announcement followed a meeting between Hamdullah Nomani, Minister of Communications and Information Technology, and Aliullah Sarwari, head of the Afghan Wireless Communication Company (AWCC), where discussions focused on expanding telecom coverage, improving service quality, and extending connectivity to remote regions.
According to ministry spokesperson Enayatullah Alokozai, AWCC has upgraded 74 telecom antennas in Kabul to 5G on a trial basis. Once technical preparations and testing are completed, the company plans to extend 5G services to other provinces.
Officials also reported steady progress on broader infrastructure development. Eight telecom sites approved during previous official visits to northern and southeastern provinces have been completed, one is nearing completion, and construction continues on two additional sites expected to become operational soon.
In parallel, the Afghanistan Telecom Regulatory Authority (ATRA) has approved eight more telecom sites under the Telecom Development Fund (TDF), with implementation scheduled in the coming months.
Sarwari noted that since the beginning of 2026, AWCC has built and activated 46 telecom sites using its development budget, while work continues on a further 186 sites nationwide.
He also thanked the Ministry of Communications and Information Technology for its ongoing support in facilitating sector growth and improving service delivery.
Nomani meanwhile emphasised that telecommunications play a crucial role in national development and said the government remains committed to working closely with operators to expand modern, high-quality digital services.
Officials added that cooperation between the ministry, regulators, and telecom companies will continue across all operational and regulatory areas to strengthen Afghanistan’s communications network.
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