Reaching the top of Mount Everest without an oxygen tank requires incredible willpower.

And I remember having to literally breathe and count 15 breaths for every step that I took, and then willing myself to take that next step and

that goes on for 12 hours on that summit day. Veteran climber Ed Visters tells us

what it's like to scale the world's tallest mountain on its own terms.

Russ Reimer explains what the planet's disappearing languages have to teach us about the different ways other cultures define their world.

Being nomadic, they see... ways other cultures defined their world.

Being nomadic, they see possessions as a burden.

Your possessions are the things you have to carry.

So they see wealth as a problem, and wealth that's not shared they see is a sin.

In Venice makes the list of the world's most endangered places

thanks to the impact of big cruise ships.

It's really hard to manage some of these large groups that all arrive at once.

Take a closer look at the world we share in the hour ahead.

It's Travel with Rick Steve's.

Since the words you speak define how you look at the world,

coming up today on Travel with Rick Steeves,

we'll learn what the world loses every few weeks

when somewhere on earth another language dies off.

And Ed Veesters tells us how he's made it to the top of Mount Everest and back again seven times.

67 heritage sites have just been added to the latest watch list of endangered places by the

World Monuments Fund. Erica Avrami joins us to explain what this includes.

Erica, thanks for joining us. Well thank you for having me.

...