The Know Daily - Monday 10 March 2025

_{Read in 4m 25s ∙ Listening to Jorja Smith ∙}

An underwater light that boosts coral reef restoration has been developed by scientists. By attracting zooplankton to coral, they’re able to access greater amounts of food, making them “more likely to be resilient” against environmental changes.

🌌 Cosmic billboards

Advertising in space may be a thing of the future, but there have been calls to ban the practice before it's even properly begun.

Tell me more.
Astronomers are calling on nations to ban commercial advertising in the sky, which can be seen from the ground without needing to use a telescope. Last year, one company tested prototype satellites using lasers to form logos and images for advertisers as more private businesses are exploring this new form of marketing to the public. Global digital marketing is predicted to reach nearly $800bn by 2026, and has risen by 140% on social media in the last 5 years. But adverts in the sky over an entire urban area could have an even bigger reach, even moreso if shared online due to their initial novelty.

Why are we telling this story now?
Whilst space advertising is banned by law in the US, the American Astronomical Society said there’s “growing concern” that other countries could take up the practice, so are calling on nations worldwide to follow suit. It also comes during a time of increased interest in space exploration by private companies and consequently more shiny debris in Earth’s lower orbit that make observations of the cosmos challenging enough already.

What’s the reaction been?
One company’s plans to promote an energy drink in space received strong criticism on social media and the project was ultimately scrapped. Nevertheless, astronomers have said “the lure and commercial value will prompt somebody to try it” beyond initial tests, so they hope acting in advance will help protect nighttime skies from additional light pollution.

Here at The Know we’re all about empowering our readers financially. That’s why for this Money Monday, we’ve teamed up with PensionBee – a leading online pension provider that helps you combine your existing pensions into one easy-to-manage online plan. Today, they’re helping us break down what sustainable investing actually is and what it looks like in practice. When investing, your capital is at risk. You can listen or watch it here.

🪧 Women’s rights: Hundreds of thousands of people around the world participated in rallies this weekend to mark International Women’s Day and advocate for equality.

🇨🇦 New leadership: The former Bank of England governor Mark Carney has been named the next prime minister of Canada, following Justin Trudeau’s resignation.

🐕 Dazzling dogs: Italian whippet Miuccia won the highly coveted Best in Show award at the 2025 Crufts dog show.

✨ Feel good style: Check out this jewelry brand making a difference. They’ve allocated over $324K via their Empowerment Fund since inception to support 90 bursaries for underrepresented women. We especially love these studs crafted from lab-grown gemstones and recycled sterling silver.

🎶 Never-ending nightlife: This capital has been named Europe’s top city for live music.

🔗 Last week’s most clicked: The world’s best pizza, Glastonbury headliners and the best of women’s fiction.

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Trivia answer: B) Duddell’s at Hong Kong International took the top spot – see which others made the list.

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