In this segment, the narrator explains where the name Bryce Canyon came from, and why the sand dunes in the US and the large deserts of the world might be related.

Londoners interviewed at Borough Market describe the great variety of thriving cultures – with an emphasis on cuisine – in their city.

The BBC looks at a new and innovative renewable energy invention, Kite Power Solutions. It is estimated that 30 kites could provide electricity for 75,000 homes.

Retired interior designer Peg Harris explains a bit about what that profession is all about.

The narrator explains how the breathtaking rock formations of Antelope Canyon came to be, and why mountains around the world can provide a metaphor for human existence.

London's West End is the focal point for this video, and the narrator has some good tips on buying discounted movie and theater tickets.

Bob Dignen introduces the topic of decision-making in international companies, and the various approaches to this.

Sigrid explains the meaning of "prop" as both a noun and a verb. Either one can come in handy.

This video provides some helpful advice on getting around London, including pointers on cabs, double-decker buses, and the Underground.

Here's a business meeting where not everyone has the same opinion. Even if you can't understand every word, try to grasp some of the expressions the speakers use to agree or disagree.

Some and any both refer to an unspecified quantity, but they are used in different situations. Sigrid explains how they work.

Nate is a preschooler whose love for geography, countries, flags, and more has really put him on the map!

The earth's bodies of water are the focus of this film about evolution. As the narrator points out, the vast depths of the earth's oceans remain barely explored.

This is a short video showing some of London's best-known sights, such as Trafalgar Square, Tower Bridge, and the Tate Modern.

In this video, Sigrid looks at certain kinds of questions in which it is correct to use "some," the dreaded double negative, and negative statements that can be expressed in two different ways.