Do Neurons Work Alone?
"Do the billions of non-neuronal cells in the brain send messages of their own?" Nature's Kerri Smith reports on a change in our understanding of the brain decades in the making.
Ken McCarthy, a geneticist at the University of North Carolina School of Medicine in Chapel Hill, is about to fan the flames of a debate about whether glia, the largest contingent of non-neuronal cells in the brain, are important in transmitting electrical messages. For many years, neurons were thought to be alone in executing this task, and glia were consigned to a supporting role regulating a neuron's environment, helping it to grow, and even providing physical scaffolding (glia is Greek for 'glue'). In the past couple of decades, however, this picture has been changing.
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Quoth the parrot — "Nevermore."
- Edgar Allan Poe (1809–1949) is considered one of America's great writers.
- Poe penned his most famous poem, The Raven, in his 30s.
- Originally, the poem's feathered subject was a bit flamboyant.
Evolution doesn't clean up after itself very well.
- An evolutionary biologist got people swapping ideas about our lingering vestigia.
- Basically, this is the stuff that served some evolutionary purpose at some point, but now is kind of, well, extra.
- Here are the six traits that inaugurated the fun.
- Facebook and Google began as companies with supposedly noble purposes.
- Creating a more connected world and indexing the world's information: what could be better than that?
- But pressure to return value to shareholders came at the expense of their own users.
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