This is a volcanic ridge.

But 10 miles down the ridge...

The climbers got on the southeast ridge.

Is this the bus for Park Ridge?

And there were climbers on that summit ridge.

This is the view looking at the southeast ridge.

This is a view taken along the summit ridge.

39 percent of homes on Pine Ridge have no electricity.

We worry about cocaine coming from the Andean Ridge north.

And you'll note I started chewing gum because I was around this camel all day.

And Tomasz, a young Polish man said, I don't need twenty kinds of chewing gum.

OK, this is a view taken on the summit ridge itself.

The mid ocean ridge runs around like the seam on a baseball.

This is all you've got. You're very exposed on the summit ridge.

Unemployment on the Pine Ridge Indian Reservation fluctuates between 85 and 90 percent.

The bubble gum was chewed up by pop star Britney Spears and sold for several hundreds of dollars.

This is what a real one looks like, on the Juan de Fuca Ridge.

We're going to look at the mid ocean ridge, a 40,000 mile long mountain range.

Both Denmark and Russia have been devoting significant resources to exploring the Lomonosov Ridge. Denmark has hired Swedish icebreakers for repeated expeditions, and Russia has been deploying special submarines to obtain samples from the ridge and the ocean floor.

Her name is Pam Moran in Albemarle County, Virginia, the foothills of the Blue Ridge Mountains.

The tuberculosis rate on Pine Ridge is approximately eight times higher than the U.S. national average.

Because it's along the axis of the mid ocean ridge where the great crustal plates are separating.

What looks like a cloud behind the summit ridge is actually snow being blown off the summit.

The mid ocean ridge is a huge mountain range, 40,000 miles long, snaking around the entire globe.

How to assess countries claims to Arctic territory hinges on the status of the Lomonosov Ridge, a vast formation that rises from the sea floor and stretches 1,800 kilometers from Greenland to the East Siberian continental shelf. Everyone agrees that it is a ridge.

They had a low fear population, where they basically gave them a 13 minute presentation, all based in science, but told them that, if you didn't brush and floss your teeth, you could get gum disease. If you get gum disease, you will lose your teeth, but you'll get dentures, and it won't be that bad.

And the climbers up on the ridge were that much higher, 2,000 feet higher, and completely exposed to the elements.

You can put shoes on your feet you can play golf with golf clubs and chewed up bubble gum doesn't do anything at all for you.

Todd and Pete got up to the summit ridge, up in here, and it was a scene of complete chaos up there.

Yahweh said to Moses, Take to yourself sweet spices, gum resin, and onycha, and galbanum sweet spices with pure frankincense there shall be an equal weight of each

Yahweh said to Moses, Take to yourself sweet spices, gum resin, and onycha, and galbanum sweet spices with pure frankincense there shall be an equal weight of each

In the course of 2004, a 10 country project on the use of gum arabic for land rehabilitation and economic development in dryland areas in Africa was prepared.

The Pine Ridge Reservation, the subject of today's slide show, is located about 75 miles southeast of the Black Hills in South Dakota.

And this kind of life and death of hydrothermal vent communities is going on every 30 or 40 years all along the ridge.

There's a ridge right in the middle of the picture, up above where that arrow comes in, that shows you that a little bit.

develop new flavors of chewing gum for Wrigley or new flavors for Coke actually helped me innovate new strategies for the Kosovars and for the Saharawis of the Western Sahara.

In 1994, Oak Ridge National Laboratory in Tennessee completed production of all the iridium parts that will be used to encapsulate the Pu 238 fuel.

OK. Those climbers were up near the summit, along that summit ridge that you see up there, and I was down here in Camp Three.

When the Prestige sank off the coast of Spain, there were big, floating cushions the size of sofa cushions of emulsified oil, with the consistency, or the viscosity, of chewing gum.

Contacts were established with other specialized organizations that work on gum arabic issues, including the Common Fund for Commodities, the Food and Agriculture Organization of the United Nations (FAO) and ICRISAT.

In it, the artist produced portraits of strangers from forensic artifacts like cigarette butts and chewing gum, extracting DNA from the detritus to conjure an image of what these folks might look like.

Since COP 6, the chef de file position of Norway in Ethiopia and the preparation of a multi country project on gum arabic, are illustrative of the outcome of these policy advocacy activities.

Of course, when you're on the ice, you only ever see one obstacle at a time, whether it's a pressure ridge or there's a bit of water.

But if you were to put it on an equal area projection, you'd see that the mid ocean ridge covers 23 percent of the Earth's total surface area.

And we're over the Atlantic that's the ridge right there but we're going to go across the Caribbean, Central America, and end up against the Pacific, nine degrees north.