Neanderthals and Homo sapiens coexisted for less than 1000 years in the Cantabrian Region

Neanderthals and Homo sapiens could not have coexisted for more than a millennium in the Cantabrian Region, which reduces significantly the possibilities for interaction between the two groups and tends to reinforce the hypothesis of an intrinsic cause of extinction, according to a study based on radiocarbon dates from thirteen archaeological sites in this area of southwestern Europe. Continue reading “Neanderthals and Homo sapiens coexisted for less than 1000 years in the Cantabrian Region”

Why are neuron axons long and spindly? Study shows they’re optimizing signaling efficiency

A team of bioengineers at UC San Diego has answered a question that has long puzzled neuroscientists, and may hold a key to better understanding the complexities of neurological disorders: Why are axons, the spindly arms extending from neurons that transmit information from neuron to neuron in the brain, designed the way they are? Continue reading “Why are neuron axons long and spindly? Study shows they’re optimizing signaling efficiency”

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