The letter "O" is a tricky vowel, because there are several ways to pronounce it, both when it's single and when it's double!

At the University of Sydney, physicist Derek Muller explores the possibility of an anti-gravity wheel through a series of field tests.

Anna explains when we use the present continuous, or present progressive tense and gives us some examples.

Negotiating a salary is one the trickiest phases of a job interview. Here are some tips.

Watch this video featuring Alexander Pointer to learn the many ways of greeting people in English.

Members of Team Naish talk about how much fun they have hanging out together, but once they get on their boards, their attention turns to the next wave, and doing their best on an individual basis.

Annette takes us on a tour of her conversion van named Hermes, a van that has been, in her case, converted into a living space. In addition to the basics, she has equipped the van with many of the comforts of home.

"H" is a tricky letter for lots of folks. Sigrid shows us how to make the sound, and gives us plenty of examples.

Annette gives us some tips on using yoga moves to give our muscles a break when on a road trip.

The letter "G" often combines with "N" to make a special sound. Sigrid explains how this works.

Sigrid talks about the hard and soft sounds for the letter "G", and gives us some practical examples with "G" at the beginning, in the middle, and at the end of a word.

Lucy talks with TV host Jeremy Hassell to find out what's trending in NYC. Watch the dynamic duo as they talk about men's fashion and the best areas of Manhattan for spotting new trends.

Sigrid explains what a limerick is, and how to write one. If you are so inclined, you can submit your limericks in the "comments" section of the video tab.

Let's learn about pronouncing the letter "F" in various contexts.

Career expert Nicole Williams explains the most important question in an interview and the kind of answer the interviewer is looking for.