One in eight teenagers aged 14 to 17 have used nicotine pouches, a survey has found, adding to health experts’ concern about their growing popularity.

Users hold the small sachets, which look like mini-teabags and are often flavoured, in their mouths to enjoy the release of the nicotine they contain. They are also known as “snus”.

Unlike smoking the pouches do not raise the risk of cancer, but they have caused alarm because of the fear that users could become addicted to nicotine and suffer mouth and dental problems.

A survey of 500 teenagers aged 14 to 17 in England, Scotland and Wales found that 13% have used a nicotine pouch, of whom 30% said they did so at least once a week. Most get them from friends or buy them in shops, which are not subject to any age restrictions as to who they can sell them to.

The same survey, by Deltapoll for the Future Health consultancy, found that seven in 10 respondents backed the UK government’s planned crackdown on them. The tobacco and vapes bill will outlaw selling pouches to under-18s, as well as changing the packaging and limiting the use of flavours and the amount of nicotine to make them less appealing to children and young people.

Steve Brine, a former public health minister, wrote in a foreword to a new report by Future Health on the pouches: “These unregulated products are being heavily pushed at young people, whether it be through shop displays, social media or in partnerships with UK music festivals.”

Referencing that most of the main brands were made by cigarette companies, Brine added: “The tobacco industry is constantly looking for the next business opportunity with which to addict a new generation to nicotine.”

Almost half (46%) of the teenagers surveyed had seen nicotine pouches advertised, mainly in shops and on social media. Three-quarters (73%) want to see restrictions on their promotion, sale and use, while a majority want it made illegal for under-18s to buy them (63%) and back health warnings (59%).

The survey was undertaken for Kenvue, which makes Nicorette, the over the counter nicotine replacement therapy that some smokers use to try to quit. Future Health is run by Richard Sloggett, a former special adviser at the Department of Health and Social Care (DHSC).

The report says: “Health concerns have to date focused on oral health issues such as a dry mouth, gum lesions or blisters, unusual jaw sensations and receding gums.

“[But] studies have also raised concerns that 30mg nicotine pouches have led to a higher nicotine uptake compared with cigarettes and increased arterial stiffness.”

Sales of brands such as Velo, Nordic Spirit and Zyn are growing fast.

A group of international health experts warned in the European Heart Journal this week that “nicotine is toxic to the heart and blood vessels, regardless of whether it is consumed via a vape, a pouch, a shisha or a cigarette”. They voiced concern about the recent dramatic rise in use of vapes, heated tobacco and nicotine pouches, especially among adolescents and young adults.

Separate research published this week in the journal Lancet Public Health found that more than 500,000 people in Britain now use nicotine, with the boom driven by members of gen Z, especially young men. The proportion of 16- to 24-year-olds doing so has jumped from 0.7% in 2022 to 4% this year, according to the study led by Dr Harry Tattan-Birch of University College London.

“Pouches have a substantially lower risk to health than cigarettes and are likely less harmful than e-cigarettes. However, they are not harmless,” he said.

A spokesperson for Zyn, which is made by the tobacco firm Philip Morris International, said: “The reality is smoke-free products such as nicotine pouches have successfully supported millions of adults to leave cigarettes behind. Public health policymakers should be encouraged that, according to Ash, 96% of teenagers have never tried nicotine pouches.”

Asli Ertonguc, the head of British American Tobacco in the UK and western Europe, highlighted that last week’s Lancet study also found that more and more smokers are using pouches to help them give up. A ban on advertising snus could put that press at risk, she added.

A spokesperson for Japan Tobacco International, which makes Nordic Spirit, said: “We welcome regulation that prohibits sale of nicotine products to minors but have concerns about some aspects of the [tobacco and vapes] legislation that could needlessly damage an emerging category and risk undermining the UK’s success in promoting smoking alternatives if passed.”

A DHSC spokesperson said: “We’re acting to protect people’s health and stop young people getting hooked on nicotine. Right now, nicotine pouches are far less regulated than nicotine vapes. This will change. The tobacco and vapes bill will make it illegal to sell nicotine pouches and other nicotine products to anyone aged under 18 to keep young people safe.”

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Scientists have identified a previously unknown natural compound produced by heat-loving cyanobacteria that helps protect against ultraviolet radiation. Natural sunscreen ingredients can protect the skin from damaging radiation while reducing the risk of allergic reactions. In a recent study, scientists identified a previously unknown compound called β-glucose-bound hydroxy mycosporine-sarcosine that is produced by heat-loving cyanobacteria […]



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This article was originally published at Eos. The publication contributed the article to Space.com’s Expert Voices: Op-Ed & Insights.

Our sun is about halfway through its life, which means Earth is as well. After a star exhausts its hydrogen nuclear fuel, its diameter expands more than a hundredfold, engulfing any unlucky planets in close orbits. That day is at least 5 billion years off for our solar system, but scientists have spotted a possible preview of our world’s fate.

Using data from the TESS (Transiting Exoplanet Survey Satellite) observatory, astronomers Edward Bryant of the University of Warwick and Vincent Van Eylen of University College London compared systems with stars in the main sequence of their lifetimes—fusing hydrogen, like the sun—with post–main sequence stars closer to the end of their lifetimes, both with and without planets.

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“We saw that these planets are getting rarer [as stars age],” Bryant said. In other words, planets are disappearing as their host stars grow old. The comparison between planetary systems with younger and older stars makes it clear that the discrepancy does not stem from the fact that the planets weren’t there in the first place: Elderly stars just get hungry.

“We’re fairly confident that it’s not due to a formation effect,” Bryant explained, “because we don’t see large differences in the mass and [chemical composition] of these stars versus the main sequence star populations.”

Complete engulfment isn’t the only way giant stars can obliterate planets. As they grow, giant stars also exert increasingly larger tidal forces on their satellites that make their orbits decay, strip them of their atmospheres, and can even tear them apart completely. The orbital decay aspect is potentially measurable, and this is the effect Bryant and Van Eylen considered in their model for how planets die.

“We’re looking at how common planets are around different types of stars, with number of planets per star,” Bryant said. Bryant and Van Eylen identified 456,941 post–main sequence stars in TESS data and, from those, found 130 planets and planet candidates with close-in orbits. “The fraction [of stars with planets] gets significantly lower for all stars and shorter-period planets, which is very much in line with the predictions from the theory that tidal decay becomes very strong as these stars evolved.”

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Astronomers use TESS to find exoplanets by looking for the diminishment in light as they pass in front of their host stars, a miniature eclipse known as a transit. As with any exoplanet detection method, transits are best suited to large, Jupiter-sized planets in relatively small orbits lasting less than half of an Earth year, sometimes much less. So these solar systems aren’t much like ours in that respect. Studying planets orbiting post–main sequence stars poses additional challenges.

“If you have the same size planet but a larger star, you have a smaller transit,” Bryant said. “That makes it harder to find these systems because the signals are much shallower.”

However, though the stars in the sample data have a much greater surface area, they are comparable in mass to the sun, and that’s what matters most, the researchers said. A star with the same mass as the sun will go through the same life stages and die the same way, and that similarity is what helps reveal our solar system’s future.

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“The processes that take place once the star evolves [past main sequence] can tell us about the interaction between planets and host star,” said Sabine Reffert, an astronomer at Universität Heidelberg who was not involved in the study. “We had never seen this kind of difference in planet occurrence rates between [main sequence] and giants before because we did not have enough planets to statistically see this difference before. It’s a very promising approach.”

Planets: Part of a balanced stellar breakfast

Exoplanet science is one of astronomy’s biggest successes in the modern era: Since the first exoplanet discovery 30 years ago, astronomers have confirmed more than 6,000 planets and identified many more candidates for follow-up observations. At the same time, the work can be challenging when it comes to planets orbiting post–main sequence stars.

One tricky aspect of this work is related to the age of the stars, which formed billions of years before our sun. Older stars have a lower abundance of chemical elements heavier than helium, a measure astronomers call “metallicity.” Observations have found a correlation between high metallicity and exoplanet abundance.

“A small difference in metallicity…could potentially double the occurrence rate,” Reffert said, stressing that the general conclusions from the article would hold but the details would need to be refined with better metallicity data.

Future observations to measure metallicity using spectra, along with star and planet mass, would improve the model. In addition, the European Space Agency’s Plato Mission, slated to launch in December 2026, will add more sensitive data to the TESS observations.

Earth’s fiery fate is a long way in the future, but researchers have made a big step toward understanding how dying stars might eat their planets. With more TESS and Plato data, we might even glimpse the minute orbital changes that indicate a planet spiraling to its doom—a grim end for that world but a wonderful discovery for our understanding of the coevolution of planets and their host stars.

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Here at Live Science, we have created a guide to 22 gifts for nature lovers to give you some ideas of what to buy other people, but what about you?

Items like cameras, binoculars, and telescopes aren’t impulse buys, and certainly not stocking fillers. They are also very personal purchases, and often expensive. Trusting someone else to make the right choice on your behalf is a gamble, and frankly, we wouldn’t always recommend it.

If you’re a skywatcher, you’ll have a preference for what you like to look at; some telescopes will be more suitable for deep space explorations, and others will be best for planets. Similarly, photographers will know the subject matter they want to capture, which will dictate what the camera needs to be good at. Handling ISO well, a reliable autofocus? Mirrorless or DSLR? 12MP versus 61MP?

Nature spotters and birders will know what magnification and objective lens size they need for their binoculars, whether they need a waterproof or nitrogen-purged model, and whether they prefer coated or multi-coated lenses or Bk7 or BaK-4 glass. The list goes on.

There’s a good chance someone buying a pair as a gift won’t consider what you would if you were buying for yourself. But skywatching and camera equipment are often expensive, and deserve careful consideration. This is why self-gifting makes sense. Besides, we all like to splurge on a “me-to-me” every now and then!

That is why we created this self-gifting guide, which lists the binoculars, telescopes and cameras that we are more than happy to recommend this season. Each item below links to an in-depth review conducted by our staff writers or experienced freelance contributors.

We do, of course, have individual guides to the best cameras, best binoculars, and best telescopes, but this guide has been curated based on what our editors would buy for themselves — and have, in some cases — in each of the categories below.

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If there is one thing we can rely on in this world, it is human hubris, and space and astronomy are no exception.

The ancients believed that everything revolved around Earth. In the 16th century, Copernicus and his peers overturned that view with the heliocentric model. Since then, telescopes and spacecraft have revealed just how insignificant we are. There are hundreds of billions of stars in our galaxy, the Milky Way, each star a sun like ours, many with planets orbiting them. In 1995, the Hubble space telescope captured its first deep-field image: this showed us that there are hundreds of billions of galaxies in our known universe, huge wheeling collections of stars dispersed through space.

Let’s take the International Astronomical Union’s definition of space as everything in the universe apart from our planet and atmosphere. Asking the question “who owns space?” seems laughable. Hubris at a whole new level. The idea that we could lay claim to the rest of the universe is beyond conceit. It’s like a group of atoms in my little toe becoming sentient and declaring that they now own my whole body.

A few years ago, I postulated that space exploration could be divided into three distinct eras. The first was confrontation. It was the second world war that fuelled our first forays into the abyss, as this proved to be an effective way of lobbing munitions further. The space race was born from military competition – in a bid to establish superiority. The second era brought collaboration. The formation of the European Space Agency in 1975 and that symbolic docking between Soviet and American space vehicles symbolised what humanity could achieve collectively. But now we’re on the verge of a third era: commercialisation. Space exploration is no longer just the domain of nations, but of billionaires, private companies and start-ups promising holidays in orbit.

Space should be regarded as a shared domain, similar to the high seas or Antarctica

Of course, the space industry has been commercial for decades – many communications satellites, Earth-observation systems and some launch vehicles are privately funded and operated. But what’s changing is that humans themselves are now part of the business plan, as we move from exploration to possible exploitation. Private space stations, space tourism, lunar and asteroid mining – this is the new frontier. So the question of ownership suddenly has legal, ethical and economic urgency.

Legally speaking, the groundwork for managing space was laid long ago. In the late 1950s and early 60s, as rockets first breached Earth’s atmosphere, the United Nations drafted agreements to govern activities beyond our planet. The Outer Space Treaty of 1967 set out some remarkably idealistic principles: “The exploration and use of outer space, including the moon and other celestial bodies, shall be carried out for the benefit and in the interests of all countries, irrespective of their degree of economic or scientific development, and shall be the province of all mankind.” I would reword it to humankind, but I do like the sentiment.

It’s a beautiful vision, but potentially an increasingly fragile one. As technology advances, these noble principles will come face to face with economic reality. When a commercial company finds a valuable mineral deposit on the moon or an asteroid, who gets to profit?

I would argue that commercialisation is necessary – space needs to pay for itself, because without profit, humanity will stay “terra-bound” for centuries. Exploration is expensive, and governments alone can’t afford to foot the bill. If mining helium-3 or capturing asteroids helps fund missions that expand our knowledge, capabilities and improve our husbandry of our planet, that could be a good thing. But commercialisation must come with equity and transparency. Otherwise, we risk repeating the mistakes of our past, but on a truly cosmic scale.

The comparison I often like to make is with the East India Company: a private British enterprise that became so powerful it could shape the politics of nations and at times had an army twice the size of Britain’s. It began as trade; it ended in domination. Could a similar dynamic unfold locally in our solar system, where a handful of today’s tech giants and billionaires control access to orbit, communications, and eventually, extraterrestrial resources? A monopoly in space would be dangerous for humanity. The challenge is to encourage innovation and investment without ceding ownership of the cosmos to a few individuals or organisations.

The moon is a fascinating case study. For scientists, it serves as a natural laboratory – a place to study planetary history and test new technologies. But it’s also an appealing commercial target. There’s water ice at its poles, which can be split into hydrogen and oxygen to make rocket fuel. Its gravity is only one-sixth of Earth’s, making it a sound launch base for deeper space exploration. And some have suggested mining the lunar surface for helium-3, a potential fuel for future fusion reactors. The possibilities are tantalising. But who decides how the moon’s resources should be used, and by whom?

The Outer Space Treaty forbids national appropriation, but it doesn’t explicitly prohibit private companies from extracting resources. That ambiguity has prompted countries such as the United States and Luxembourg to pass their own space-mining laws, granting rights to their domestic firms. Yet if each nation makes its own rules, could the result be chaos like the early wild west – or even conflict? Space, by its nature, demands global regulation.

That’s why I believe we need to revive the spirit of the early treaties, not just in words but through action. Space should be regarded as a shared domain, similar to the high seas or, perhaps more fittingly, Antarctica. No one owns Antarctica. It is protected for peaceful research under an international agreement. That hasn’t stopped some countries from eyeing its minerals, but the principle remains: collective stewardship. Space warrants the same approach. The way we behave in the third era of space will define not just the future of exploration, but the kind of species we are. Do we carry our old rivalries and greed into the stars, or do we finally learn to act as one planet, united by curiosity and care?

As always, I’m hopeful. I trust the new generation to do a better job, and space has a way of putting things into perspective. When astronauts look down at Earth from orbit, they describe a sense of awe, known as the “overview effect”. They see our planet as it really is, fragile and shared. Perhaps if we can hold on to that view, even as we venture further out, we might be able to reach for the stars in a way that benefits everyone.

Dame Dr Maggie Aderin-Pocock will deliver the 2025 Christmas Lectures from the Royal Institution.

Further reading

Orbital by Samantha Harvey (Jonathan Cape, £9.99)

Who Owns the Moon? by AC Grayling (Oneworld, £10.99)

A City on Mars by Dr Kelly Weinersmith and Zach Weinersmith (Penguin, £11.69)

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The winter solstice is here today (Dec. 21), marking the shortest day and longest night of the year for the Northern Hemisphere.

As the astronomical start of winter, today is the moment the sun reaches its lowest point in the sky as seen from Earth. At noon, it appears directly over the Tropic of Capricorn, a latitude of 23.5 degrees south, creating the least daylight of the year for the Northern Hemisphere, which is tilted as far from the sun as it gets.

This turning point lasts only an instant. The exact moment of the 2025 winter solstice occurs today at 10:03 a.m. EST (1503 GMT), officially ushering in the new season.

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With the sun tracking low across the horizon, its rays arrive at a shallow angle, spreading light over a larger area and reducing heating. It’s this lower solar angle, not our distance from the sun, that drives the coldest months of the year. But from this point forward, daylight will slowly begin to increase as we begin the slow march toward spring.

Earth’s seasons exist because our planet is tilted by 23.5 degrees on its axis. As Earth orbits the sun, different hemispheres lean toward or away from it, changing the intensity and duration of sunlight. When the Northern Hemisphere tilts toward the sun, we get summer; when it tilts away — as it does now — we have winter.

Meanwhile, the Southern Hemisphere is experiencing its summer solstice today, enjoying the longest day of the year.

Although many assume winter corresponds to Earth being farther from the sun, the opposite is true. Earth actually reaches perihelion, its closest point to the sun, early next month on Jan. 3, 2026. At that moment, our planet will sit about 91.4 million miles (147.1 million kilometers) from the sun, slightly closer than its average distance of 93 million miles (149.6 million km).

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Many cultures mark the winter solstice as a moment of renewal and the symbolic return of light. Starting tomorrow, daylight begins to grow again, a reminder that brighter, warmer days are on the way.

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Webb and Chandra spot a cosmic car crash (Image credit: Credit: X-ray: NASA/CXC/SAO; Infrared: NASA/ESA/CSA/STScI/Webb; Image Processing: NASA/CXC/SAO/L. Frattare)

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What it is: The spiral galaxies NGC 2207 and IC 2163

Where it is: 120 million light-years away, in the constellation Canis Major

When it was shared: Dec. 1, 2025

A stark new portrait of two colliding spiral galaxies combines different kinds of light to evoke the colors, shapes and moods of autumn. The image, which shows the galaxies NGC 2207 (lower right) and IC 2163 (upper left), was created by combining infrared light captured by the James Webb Space Telescope (JWST) with X-ray light from the Chandra X-ray Observatory.

NGC 2207 and IC 2163 are locked in a slow gravitational merge that, by chance, is seen face-on from the solar system. The larger galaxy, NGC 2207, dominates the field, while the smaller IC 2163 overlaps its outer regions. The gravitational pull of each galaxy distorts the other’s spiral arms, stretching out streams of stars and gas and compressing gas and dust in ways that can ignite new stars. The result is an intricate web of chaos.

One of JWST’s core tasks, according to NASA, is to provide scientists with a clear view of the centers of merging galaxies and thereby inform a new generation of models that will describe how galaxies interact and merge. NGC 2207 and IC 2163 are the perfect targets.

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In the image, JWST’s midinfrared data appear in white, gray and red, primarily showing the dust and cooler material within the galaxies’ cores and spiral arms. Chandra’s X-ray data are shown in blue, highlighting high-energy regions of the two galaxies — binary stars, the remnants of dead stars, and regions where supernovas have occurred.

The spectacular layered image of NGC 2207 and IC 2163 is one of four Chandra-based composites that were published at the same time. The other three include NGC 6334, a star-forming region known for its arcs of glowing gas and dust; supernova remnant G272.2-0.3, where hot X-ray-emitting gas fills an expanding shell; and a star system called R Aquarii, where a white dwarf star sucks material from a red giant star.

Each image merges Chandra’s view of the high-energy universe with data from JWST (launched in 2021), the Hubble Space Telescope (launched in 1990) and the Spitzer Space Telescope (active between 2003 and 2020), as well as from ground-based telescopes.

For more sublime space images, check out our Space Photo of the Week archives.

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Netflix is one of the best streaming services available and Stranger Things is one of its flagship shows. So, to celebrate the final season coming to the small screen, and the holiday season too, we’ve rounded up the best Stranger Things gifts on the market.

Here, you’ll find a range of gifts from clothes to collectibles to trinkets, replicas and more. The holiday season is here and the final episodes of Stranger Things will air on Christmas Day and New Year’s Eve, so there’s never been a better time to search for the best Stranger Things gifts out there. While we haven’t reviewed any of the items we’ve highlighted, we wouldn’t include them if we didn’t recommend having them.

With Stranger Things being one of the most anticipated sci-fi TV shows around, there’s a huge range of Stranger Things gifts available. If you don’t find something suitable though, you can always check out the best streaming deals, Fallout gifts, 10 best space gifts under $100, or something a little different like the best star projectors and best Lego Star Wars sets ahead of the holidays. But, for the best Stranger Things gifts on the market, scroll down below.

Best Stranger Things Gifts We Recommend

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A paraplegic engineer from Germany blasted off on a dream-come-true rocket ride with five other passengers on Saturday, leaving her wheelchair behind to float in space while beholding Earth from on high.

Severely injured in a mountain bike accident seven years ago, Michaela Benthaus became the first wheelchair user in space, launching from west Texas with Jeff Bezos’s company Blue Origin. She was accompanied by a retired SpaceX executive also born in Germany, Hans Koenigsmann, who helped organize and, along with Blue Origin, sponsored her trip. Their ticket prices were not divulged.

An ecstatic Benthaus said she laughed all the way up – the capsule soared more than 65 miles (105km) – and tried to turn upside down once in space.

“It was the coolest experience,” she said shortly after landing.

The 10-minute space-skimming flight required only minor adjustments to accommodate Benthaus, according to the company. That’s because the autonomous New Shepard capsule was designed with accessibility in mind, “making it more accessible to a wider range of people than traditional spaceflight”, said Blue Origin’s Jake Mills, an engineer who trained the crew and assisted them on launch day.

Among Blue Origin’s previous space tourists: those with limited mobility and impaired sight or hearing, and a pair of 90-year-olds.

For Benthaus, Blue Origin added a patient transfer board so she could scoot between the capsule’s hatch and her seat. The recovery team also unrolled a carpet on the desert floor after touchdown, providing immediate access to her wheelchair, which she left behind at liftoff. She practiced in advance, with Koenigsmann taking part with the design and testing. An elevator was already in place at the launch pad to ascend the seven stories to the capsule perched atop the rocket.

Benthaus, 33, part of the European Space Agency’s graduate trainee program in the Netherlands, experienced snippets of weightlessness during a parabolic airplane flight out of Houston in 2022. Less than two years later, she took part in a two-week simulated space mission in Poland.

“I never really thought that going on a spaceflight would be a real option for me because even as like a super healthy person, it’s like so competitive, right?” she told the Associated Press ahead of the flight.

Her accident dashed whatever hope she had. “There is like no history of people with disabilities flying to space,” she said.

When Koenigsmann approached her last year about the possibility of flying on Blue Origin and experiencing more than three minutes of weightlessness on a space hop, Benthaus thought there might be a misunderstanding. But there wasn’t, and she immediately signed on.

It’s a private mission for Benthaus with no involvement by the European Space Agency (ESA), which this year cleared reserve astronaut John McFall, an amputee, for a future flight to the International Space Station. The former British Paralympian lost his right leg in a motorcycle accident when he was a teenager.

An injured spinal cord means Benthaus can’t walk at all, unlike McFall, who uses a prosthetic leg and could evacuate a space capsule in an emergency at touchdown by himself. Koenigsmann was designated before flight as her emergency helper; he and Mills lifted her out of the capsule and down the short flight of steps at flight’s end.

“You should never give up on your dreams, right?” Benthaus urged after touchdown.

Benthaus was adamant about doing as much as she could by herself. Her goal is to make not only space accessible to disabled people, but to improve accessibility on Earth too.

While getting lots of positive feedback within “my space bubble”, she said outsiders aren’t always as inclusive.

“I really hope it’s opening up for people like me, like I hope I’m only the start,” she said.

Besides Koenigsmann, Benthaus shared the ride with business executives and investors, and a computer scientist. They raised Blue Origin’s list of space travelers to 86.

Bezos, the billionaire founder of Amazon, created Blue Origin in 2000 and launched its first passenger spaceflight in 2021. The company has since delivered spacecraft to orbit from Cape Canaveral, Florida, using the bigger and more powerful New Glenn rocket, and is working to send landers to the moon.

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A rare dinosaur discovery sheds new light on the evolution of flight. Fossils of dinosaurs found with well-preserved feathers suggest that some of these animals were no longer capable of flight. The researchers explain that even a detail as subtle as how feathers are replaced can dramatically reshape our understanding of how flight evolved, revealing […]



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