Annette sharpens her skydiving skills in a vertical wind tunnel in Slovakia. The wind reaches a speed of 180 kilometers per hour (112 mph).

Fuse School: Learn the basics about the effects of global warming on the environment. Some of the problems global warming may cause are changing climate, extremes of weather, problems for ecosystems, rising sea levels, and ocean acidification.

"U" is an interesting vowel, and has a few different sounds. It can even sound like the consonant "Y," and combines with other vowels to make new sounds.

Julia and Rachael are young American women living in Berlin. Maggie, a friend of theirs from the United States, is coming for a visit. They are pretty excited about Maggie's arrival.

Australians Kylie Minogue and Nick Cave of the band Nick Cave and the Bad Seeds sing a beautiful but macabre duet about a man who brought his sweetheart to a river and killed her. A 19th century Irish song entitled “Down in the Willow Garden” inspired Cave to write the song.

The three girls are happy to be reunited, and Maggie gets settled into the apartment. She feels lucky to have such good friends.

"V" is a voiced consonant. "Voice" starts with "V." We make the sound with the upper teeth lightly touching the lower lip, like "F" but with the voice, too. It vibrates. The verb "to vibrate" also starts with "V." That should make it easy to remember.

The three friends have breakfast together, do some catching up, and muse about the future. Who knows, will they all end up living together in Berlin one day?

"W" is a consonant, but it is very vowel-like and is considered a "semi-vowel." "W" is featured in plenty of important words, and it combines with other letters to make some new sounds.

"X" is a special letter in that we often use it by itself. It's useful in a lot of situations. In the middle of a word, however, it can be pronounced in a few different ways.

Do you want to prepare for that big job interview? If so, take a look. Gabrielle offers some valuable information and a few helpful hints.

Gabrielle presents three key questions you're likely to face when being interviewed for a job. Her advice is spot on.

"Y" is a tricky letter because it's both a consonant and a vowel. As a vowel, it has different sounds. Don't worry. But hey, maybe keep your eye on the "Y." Don't let it fly away.

Anna, from Cambridge University Press, explains how and when to use the Present Simple.

The British band Madness had a major UK hit with this song, and with good reason: heartfelt and nutty in equal measure, it would bring the house down at every Madness show. The video — filmed above and below water — is one of their classics, with cameo appearances by Big Bird, a killer whale, and Labi Siffre, who wrote the song.