Nature.

In a experiment, I don't know yet.

Why is Blight so far?

Like, it sounds so simple.

They had no idea.

But now the data's...

I find this not only refreshing, but at some level astounding.

Nature.

Welcome back to the Nature podcast.

This week on the show we'll be looking at the ethical questions raised by model minds

and finding out about an updated structure for an important enzyme.

Plus, we'll have the search for methane on Mars.

This is the Nature Podcast for the 26th of April 2018.

I'm Benjamin Thompson and I'm Adam Levy.

Over the centuries, animal models have been used for all sorts of biological research

and have enabled some major discoveries.

But when it comes to studying something as complicated as human brain conditions, we really

need human brain tissue to study. This week, a diverse group of researchers, ethicists and philosophers

have collectively published a comment piece

in which they speak out about their concerns for the future brain research.

Here's reporter Ellie Mackay to tell us more.

The pages of nature this week contain an image of something called a brain organoid.

...