When a message arrives from an Inuit correspondent, a small team sets off to investigate the environmental changes that threaten the delicate balance of life in the frozen north.

Whenever faced with a conflict of interest between their profits and our safety and security, Facebook shows scant regard for honesty and ethics. So says former high-level Facebook employee Frances Haugen, who hit the headlines with this exposé of the social media giant.

In this clip, Mark Powell provides best practice tips for opening and closing presentations. The key is often beginning with a story or anecdote that engages the audience.

Woken in the night by a thunderstorm, Victor calls to his mother for reassurance and they talk about her unhappiness. Outside the school, after their holiday, they await the return of Miss Thompson from her summer break.

Debbie takes the young reporters along on a hunting trip and shows them one of the last remaining areas for wildlife. We hear more about the strain that a changing climate is placing on these remote and traditional communities.

Mark Powell closes his tutorial with advice about structuring your presentation, and how to leave a lasting impression on your audience.

The song "Learning to Fly" is from Pink Floyd's album A Momentary Lapse of Reason. David Gilmour wrote the song, and was inspired by his experiences as a pilot.

The group makes a plan to spread word of the Inuit's plight, but there's already a tense situation building, as hungry polar bears enter the village in search of food.

Facebook whistleblower Frances Haugen calls for government action and full transparency as she rejects Facebook’s claim that privacy issues prevent it from sharing research data.

English singer Billy Idol is known for his rock anthems such as "White Wedding," but this ballad from his album Rebel Yell is also one of his greatest hits.

"Golden Brown" is one of the most famous hits from English rock group the Stranglers, noted for its unusual use of the harpsichord and lyrics about heroin usage.

Inductees Ringo Starr and Paul McCartney of The Beatles perform "With A Little Help From My Friends" with special guests at the 2015 Rock & Roll Hall of Fame Induction Ceremony.

The summer before college, Auden meets the mysterious Eli, a fellow insomniac. While the seaside town of Colby sleeps, the two embark on a nightly quest to help Auden experience the fun, carefree teen life she never knew she wanted.

Things are going so well for Colbie Caillat that she's ready to say "I do." This light and breezy single is from the American singer's album All of You.

Abi decides that a picnic in the park will be a great way to spend time with her friends, but first she needs to prepare the sandwiches. Follow Abi through the process and learn a lot of English food vocabulary along the way!