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Health

Your chance of having a boy or girl may not be 50/50

We commonly think that sperm determines the sex of a child, depending on whether it carries an X or Y chromosome, but a study now suggests that a woman's age is also a factor

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Life

Exposure to microplastic makes animals want to eat it more

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2K6ERBY Flock of sheeps moving down the valley, French Alps, border with Switzerland

Environment

Ranching and farming have eroded almost all the soil in the Alps

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Physics

Laws of quantum physics may rule out a universe that came before ours

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Health

Obesity may come in 11 different types, each with their own cause

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Environment

Is it time to aim for 1.7°C as the new limit for global warming?

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Space

Little red dot galaxies have now been found in our local universe

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Environment

AI demand could drive up US electricity bills – even if it fizzles

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Health

The world is losing major ground in the fight against measles

Analysis

Technology

Billions of phones can detect and warn about nearby earthquakes

Google’s Android Earthquake Alerts program is a globe-spanning earthquake early-warning system that uses billions of phone sensors to detect seismic shaking and alert those at risk

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Health

Genetically tailored microbes could tweak our microbiomes

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Technology

UK online safety law is going to change the way we use the internet

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Humans

Neanderthal groups had their own local food culture

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Health

Babies made using three people's DNA are free of hereditary disease

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