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Is there an ancient black hole at the edge of the solar system?

Space

Is there an ancient black hole at the edge of the solar system?

Hints of a hefty source of gravity beyond Pluto sparked the search for a possible “Planet Nine”. Now, some astronomers think it could instead be a black hole from the big bang, offering a rare glimpse into the early universe

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Kate Crawford interview: How AI is exploiting people and the planet

Technology

Kate Crawford interview: How AI is exploiting people and the planet

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Huge rogue waves rise from nowhere to sink ships. Can we predict them?

Earth

Huge rogue waves rise from nowhere to sink ships. Can we predict them?

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Green spaces aren’t just for nature – they boost our mental health too

Environment

Green spaces aren’t just for nature – they boost our mental health too

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Aircraft contrails are a climate menace. Can we rid the sky of them?

Technology

Aircraft contrails are a climate menace. Can we rid the sky of them?

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Mark Carney interview: Rethink capitalism to solve the climate crisis

Technology

Mark Carney interview: Rethink capitalism to solve the climate crisis

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Think yourself younger: Psychological tricks that can help slow ageing

Health

Think yourself younger: Psychological tricks that can help slow ageing

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Margaret_keenan_First_Uk_covid_vaccination

Health

Covid-19: The story of a pandemic

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Cold-water swimming: What are the real risks and health benefits?

Health

Cold-water swimming: What are the real risks and health benefits?

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Covid-19 hit biodiversity across the globe. Here’s how to fix things

Environment

Covid-19 hit biodiversity across the globe. Here’s how to fix things

From big-game poaching to increased deforestation, the pandemic hit nature hard. Solving the crisis means empowering people to protect the ecosystems they live in

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Physics

Quantum weirdness isn’t weird – if we accept objects don’t exist

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Physics

Did time flow in two directions from the big bang, making two futures?

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Health

How our abuse of nature makes pandemics like covid-19 more likely

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Mind

The hidden rules that determine which friendships matter to us

Features