Since 2020, Crescent Island has been cut off from the mainland by rising water. Without predators, animals from wildebeest to giraffe are thriving there, but it isn't all good news.

The crisis is overwhelming, but we know what we need to do to fix it.

Researchers hope to finally peek inside later this year.

It’s not just an evolutionary curiosity – it determines how our brains form, and misunderstanding it may have set neuroscience back decades.