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Yeti Crabs grow bacteria on their hairy claws

Deep beneath the waters of Costa Rica, dozens of crabs are waving their claws in unison, in what seems to be a rhythmic performance. It’s almost as if these crabs are locked in a ritual dance. But these charming crabs are not dancing.

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Video: Man’s best friend: Key to brain cancer cure?

CBS News correspondent Debbye Turner Bell reports on an experimental vaccine for a deadly form of brain cancer that's being tested on dogs that stimulates the patient's own immune system to fight the tumor, and perhaps even prevent a recurrence of the disease.

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Signal for Consciousness in Brain Marked by Neural Dialogue

Scientists have long hunted for a pattern of brain activity that signals consciousness, but a reliable marker has proved elusive. For many years theorists have argued that the answer lies in the prefrontal cortex, a region of high-level processing located behind the forehead; neural signals that reach this area were thought to emerge from unconscious obscurity into our awareness. Recent research, however, supports the idea that consciousness is a conversation rather than a revelation, with no single brain structure leading the dialogue.

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Inheritance of Acquired Characteristics [Animation]

See how a rat’s mothering style can be passed down to her pups--and to their pups and so on--by altering the mix of chemical groups, or epigenetic marks, on genes in the brain. This animation is based on research led by Michael Meaney of McGill University

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