The brain is only the size of a pea, but looks like a normal brain and has multiple cell types and all the regions of a normal brain - "equal in maturity to that of a five-week-old fetus," according to the report.

They say it could be used as a more effective and more ethical way to test the effects of drug treatments on the brain.

Click here to read more from AFP.

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Foo Fighters closed out Shaky Knees 2024 at Central Park with extended versions of their biggest hits. The indie rock festival has moved to Piedmont Park for this weekend's event. (Ryan Fleisher for the AJC)

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