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dot com and secure your seats today how does a country go from democracy to dictatorship in one generation?

It's easier than you may imagine.

This is Juan Sebastian Chamorro, a Georgetown educated economist who was planning to challenge

the dictator Daniel Ortega for president of Nicaragua. This video was recorded just hours before he was violently taken from his home by mass police officers.

In it, he says, if you're seeing this, I've been captured.

We Americans spend 90% of our time inside buildings.

Well, we found a group of young architects who have set out to create a new model of architecture,

one that is both beautiful and healthy for the people who build and use them.

Inspiration, they say they got in Africa and have now brought home. What you were doing in Rwanda, you were also doing in Haiti, Malawi, and Poughkeepsie.

Yvall Noah Harari is a world-renowned historian who's looked into the future

and is more than a little concerned about what he sees.

We'll soon have the power to re-engineer our bodies and brains, whether it is with genetic

engineering or by directly connecting brains to computers,

or by creating completely non-organic entities, artificial intelligence,

and these technologies are developing at breakneck speed.

I'm Leslie Stahl.

I'm Bill Whitaker. I'm Anderson Cooper. I'm Sharon Alfonci. I'm Leslie Stahl. I'm Bill Whitaker.

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