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Health

Fluctuating oestrogen levels may alter how drugs enter women's brains

Oestrogen levels fluctuate throughout a woman's menstrual cycle, which may impact how efficiently a drug that targets the brain can reach its destination

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Space

Hidden black hole could explain mystery at the heart of our galaxy

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Earth

Huge crater in Australia may be the oldest impact structure on Earth

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Health

You should turn off fans when it's too hot – but how hot is too hot?

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Humans

Elite Maya people had teeth placed in a cave far from their tombs

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Space

SpaceX's secretive plans to deliver cargo to Earth from space

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Health

Unapproved gene therapy for boosting longevity is set to go on sale

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A scanning electron microscope image of the magic mushroom species Psilocybe cubensis, the highly potent psychedlic that the woman with Alzheimer's was given

Health

Woman with Alzheimer's starts conversing again after taking psilocybin

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Life

New-to-science spider builds trap that flings ants into the air

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Environment

A promising natural technique to remove CO2 could backfire

Several start-ups have tried to grow seaweed to remove atmospheric CO2, but this could affect the levels of nutrients in the ocean and hamper other CO2-sucking processes

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Technology

People training new AI models admit they just get chatbots to do it

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Health

Faecal transplant makes the brains of old mice act young again

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Space

We've found a mysterious substance on Titan and Pluto

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Environment

Most portable air conditioners suck – but there's an easy fix

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