Christianity in Iraq was born in small towns and villages like these.

Today some of them are deserted, abandoned because ISIS is forcing Christians out.

The Islamic State marks homes the way Nazis marked the property of Jews.

Archbishop Nicodemus Sharath says he had five minutes to flee from Iraq's second largest city, Mosul.

He grabbed five ancient manuscripts from his church, but had to leave other relics behind.

You had books from the first century.

Of that Christianity.

The F-35 fighter jet is the most technologically advanced weapon system in history.

Each one contains nearly a half a ton of what's called rare earth elements, almost all of which come from

China. The guidance systems on weapon systems and Tomahawk cruise missile, any of the smart

bombs have rare earths in them, I'd be hard pressed to name anything that we consider worth building

today. Today and going forward that would not have a rare earth component in.

Because of this, because of the monopoly on rare earths, does China threaten our national security?

Unchecked, yes.

Here is something you haven't seen before. An astrophysicist on stage in a sold-out auditorium.

Neil deGrasse Tyson is reigniting a fascination for the great beyond. He succeeded Carl Sagan

as the country's most captivating scientific communicator.

When I was 11, I said, this is so amazing. Who wouldn't want to study the universe?

What was so amazing? The endless frontier of it all. The vastness of it. The mystery of it.

I'm Steve Croft. I'm Leslie Stahl. I'm Lara Logan. I'm Bill Whitaker.

I'm Charlie Rose.

I'm Scott Pelly.

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