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Nature Podcast

Nature Podcast: 7 May 2015

Nature Podcast

podcast@nature.com

Science, Technology, News

4.5893 Ratings

🗓️ 6 May 2015

⏱️ 26 minutes

🧾️ Download transcript

Summary

This week, brain-inspired computers, scientists soldiering on past retirement age, and the origins of complex cells deduced from deep-sea samples.

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Transcript

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0:00.0

This week, Soldier-on-Pas retirement or give it all up to travel the world.

0:07.0

If I were stuck at home, I would be more on my own, weeding my leaks.

0:12.0

A microchip that learns like the human brain.

0:15.0

We don't really know what's happening inside and eventually the system kind of magically converges.

0:25.5

Plus, a new species found in a deep sea vent shakes the branches of the tree of life.

0:28.3

This is the nature podcast for May 7th, 2015.

0:29.6

I'm Kerry Smith.

0:31.0

And I'm Adam Levy.

0:38.5

The computer in your laptop or phone works completely differently to the computer in your head.

0:45.4

There are over 80 billion neurons in the human brain, and each neuron is connected to thousands of others by synapses.

0:49.1

This intricate network can store and process information.

0:56.2

For computers, on the other hand, information is normally stored and processed in different places, which can really slow things down.

0:59.4

But why not build a computer modelled on the human brain?

1:07.4

That's exactly what researchers are starting to do, making use of a device called a memorista, which works a lot like an artificial synapse.

1:12.2

Now, a team led by Dmiti Stuchov of University of California, Santa Barbara,

1:16.0

who have shown that such a computer can recognise a three-by-three pixel pattern.

1:21.4

Wait, wait, wait, Adam, nine pixels? Well, I for one welcome our new robot overlords.

1:26.5

Yes, well, the chip isn't programmed to recognise these patterns. It has to learn by itself.

1:29.5

Plus, it's really early days for this type of technology.

1:32.6

The hope is that the chip could easily be scaled up.

1:36.0

But what use would a brain-like chip have in the first place?

1:39.4

I called Dmitzsche Strukov, and he gave me a couple of examples.

...

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