Humans
Evolution of cognition might be down to brain chemistry
The prefrontal cortex, the "thinking" part of our brain, has a radically different chemical balance from that found in chimps and macaques
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The prefrontal cortex, the "thinking" part of our brain, has a radically different chemical balance from that found in chimps and macaques
Alzheimer's disease kills brain cells vital for memory – now we can make new ones from human embryonic stem cells, raising hopes of transplants