The cover letter is an essential document when submitting a job application. Here you can learn about what function a cover letter should serve.

Greentraveller's Richard Hammond shows you some of the loveliest and greenest spots in London, and gives some tips for navigating through the city.

What happened when Expedition PROTECT and American Promise arrived at Jeffrey's Ledge, a marine protected area in the Gulf of Maine? The crew tells us about what they are doing and why.

This video is a Webby Award winner. Amnesty International supporters have used the power of words to demand freedom and justice for countless human rights defenders around the world. Our words are proof that when you stand up for human rights, you never stand alone.

Learn the most important things to keep in mind when working on your resume for job applications.

This video will teach you the different pronunciations of the word "the" in American English and when they are used.

Yabla's Lauren takes us on tour of Oxford Street, the busiest street in central London!

Rachel's English: For some people, "s" and "sh" sound the same. As Rachel explains, the positions for these two sounds are quite different. Learn the difference in tongue and lip position, and practice with minimal pairs.

Rachel's English: Practice relaxing the tongue when saying words and phrases with the "n" consonant. Study with Tom!

Alexander is showing us contractions of the negative forms of the verb "to be".

Alexander Pointer takes us through the conjugations of the verb "to be" in the present tense and explains how to form the contraction (otherwise known as the "short form") for each one.

During this lesson, English teacher Alexander presents and explains different greetings in English and the time of day when each is used.

For that all important job search, discover from Gabrielle the impact that a well written cover letter can have. Her valuable advice may help you avoid some common pitfalls and improve your prospects!

In this second clip, you'll learn additional helpful hints, as well as common pitfalls to avoid when writing a resume.

Wild Sharks, a film by Sigurd Tesche, follows Professor Samuel Gruber who has been researching sharks for more than fifty years. He founded the Bimini Biological Field Station, called the Sharklab, on Bimini Island in the Bahamas.