theSIGNAL SCIENCE
17 June 2026
"For every complex problem there is an answer that is clear, simple, and wrong."
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Science

Under-16s and Social Media: Is a Ban the Answer?

The UK wants to ban under-16s from social media, but scientists say the evidence for such a move is surprisingly thin.

Picture a fourteen-year-old in Birmingham, scrolling through her phone at midnight. Now picture a politician in Westminster deciding she should not be allowed to. That tension — between protection and proof — sits at the very heart of a debate that is shaking governments on at least two continents right now. UK Prime Minister Keir Starmer has announced plans to ban children under sixteen from using social media platforms, positioning Britain as an even stricter regulator than Australia, which introduced the world's first such ban in 2024.

The announcement has been welcomed warmly by many parents, who argue that something — anything — must be done to protect young people from the documented harms of excessive screen time and online harassment. It is easy to understand the appeal. The logic feels almost self-evident: remove the source of harm, remove the harm itself. But scientists are not so sure, and their hesitation is worth taking seriously.

Researchers who have studied the relationship between social media use and adolescent wellbeing point out that the evidence for a blanket ban being effective is, at best, mixed.

Photo: Becca Tapert / Unsplash
A teenager scrolls through social media late at night, phone light illuminating her face.
Discuss
  • What is the difference between correlation and causation, and why does it matter here?
  • Should governments act on incomplete evidence if the potential harm to children is serious enough?
  • Why might social media companies prefer an age ban over changes to their platform algorithms?
  • Is the internet fundamentally different from other things — like alcohol or cigarettes — that societies choose to restrict by age?
  • Who should be most responsible for protecting children online: parents, governments, or the technology companies themselves?
Science

Climate Models Miss Heat Wave Warning Signs

Eleven of the world's most advanced climate models — the very ones used by the IPCC — can describe a heat wave once it has arrived, but they repeatedly miss the subtle atmospheric whispers that announce one is coming. …
  • If models can't predict heat wave triggers, how should governments prepare communities?
∞
Scientists have pointed to the lack of strong evidence for the efficacy of bans, and some campaigners have argued that the proposal allows social media companies to avoid making meaningful changes on their platforms.
Ian Sample, Science Editor, The Guardian
Science

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Five of our own spacecraft — Pioneer, Voyager, New Horizons — are already drifting toward other stars. So here is the uncomfortable mirror-image question: has another civilisation done the same to us first? Astronomer T. Joseph W. Lazio tested exactly that hypothesis and reached a humbling conclusion. Our technology is nowhere near good enough to say no. …
  • If an alien probe arrived here, how would scientists ever prove it?
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theSIGNAL IN THE LAB
1VOCABULARY
blanket bancorrelation
off the hookself-evidentstructural changes
advance warninghumbling conclusion
2GRAMMAR FOCUS
Discourse markers — contrast and concession (Nevertheless, Whereas, Despite, However, Although, Even though, While)
Contrast and concession markers signal that two ideas are in tension or opposition. 'Despite' and 'Although/Even though' introduce the weaker or surprising fact, while 'Nevertheless', 'However', and 'Whereas' connect contrasting clauses or sentences.
Nevertheless · Whereas · Despite · Although · However · Even though · While
  1. Many parents have welcomed the proposed social media ban warmly. , scientists remain cautious about whether it will actually reduce harm to young people.
  2. Australia introduced a social media ban in 2024, the UK is now planning to go even further by setting the age limit at sixteen.
  3. the widespread appeal of removing harmful platforms, researchers warn that a blanket ban may not address the root causes of adolescent distress.
  4. Climate models can describe a heat wave once it has arrived. , they consistently fail to detect the atmospheric signals that appear up to a week beforehand.
  5. eleven of the world's most advanced models were studied, none of them reliably captured the early warning signs of extreme heat events.
  6. A dead alien probe tumbling through space would look almost identical to a natural asteroid. , some astronomers argue we cannot rule out the possibility that one is already here.
  7. the internet can expose young people to harassment and excessive screen time, it is also a space where they find community, creativity, and support.
3PHRASAL VERBS
Match the phrasal verb to its definition. All six appear in today's articles.
  1. let off the hook
  2. point out
  3. pick up (a signal)
  4. turn out
  5. shake (governments)
  6. build up
4CRITICAL THINKING
The social media article suggests that banning a technology is more complicated than banning a substance, yet both the UK and Australia have chosen age-based bans anyway. What does this reveal about how governments tend to weigh political pressure from voters against scientific uncertainty — and is that balance a reasonable one?
5CREATIVE · HEADLINES
Write a headline for the top story in each of the following styles. One line each, no explanation:
  • TABLOID NEWSPAPER
  • LUXURY MAGAZINE
  • ACTIVIST BLOG
6WRITING
The climate models article and the social media debate both involve experts warning that the tools governments rely on are not yet good enough to support sweeping decisions. Write a short paragraph arguing whether acting on flawed evidence is ever justified, using specific details from both articles to support your view.
7DEGREES OF EXTREMITY
Complete each ladder from mild to strong. Choose from the box or use your own words where marked (*). Each rung must be stronger than the one before.
  • concerned→→
  • unusual→→
  • warm→→
  • welcomed→→
  • struggling→→
  • gap→→
  • uncomfortable→→
8SPEAKING
  1. Which article's findings should worry policymakers most, and why?
  2. Could a total internet ban ever realistically protect teenagers?
  3. What does 2020 SO reveal about the limits of human observation?
  4. Should climate scientists publicly admit when their models fail?
  5. Does protecting young people online require sacrificing their freedom?