- FUTURES
Byzantium
![A human brain floats in front of an open cage amid rows and rows of stored brains](http://media.nature.com/w767/magazine-assets/d41586-021-02769-z/d41586-021-02769-z_19742612.jpg)
Illustration by Jacey
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doi: https://doi.org/10.1038/d41586-021-02769-z