Ellie Goulding performs 'Burn' in the Live Lounge for Fearne.

Do you know your Turner from your Warhol? If not, don't worry, London is the perfect place to explore the art world through its wealth of museums. Watch and share Marcus's London story and let him take you on a journey of discovery. This Tate Modern curator is just one of the passionate staff waiting to introduce you to the people and ideas housed within the walls of the imposing former power station. Directly opposite St Paul's Cathedral across the Millennium Bridge, Tate Modern sits on the South Bank among one of the most vibrant new parts of the city.

In this episode, Doc Gruber and a colleague are testing a shark repellent. If effective, it could help save the lives of divers, swimmers and surfers all over the world.

In part 7, Robin has problems with her stepfather and is threatened by a teammate.

This rarely seen early televised version of George Orwell's novel Nineteen Eighty-Four seems no less relevant today. It was made by the BBC in 1954 and features noted actors Peter Cushing and Donald Pleasence. It was hugely controversial when it came out, and though it may seem tame today, it may have you thinking twice the next time you sit down at your "workstation"...

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.

Finally, The Frog King's curse was broken and the prince and princess got married and lived happily ever after.

Here's some more stunning underwater footage. This time it's hammerhead sharks and stingrays, a wahoo and some striped eels, all filmed near the Cocos Island in the Caribbean. Take a look!

In part 8, Tommy's having a hard time catching the attention of the girl he likes. Meanwhile, Robin's invited to a party. But it's all a cruel hoax!

Learn about the Big Ben clock tower, which is to London what the Eiffel Tower is to Paris or the Colosseum to Rome: a symbol of the city.

This rarely seen early televised version of George Orwell's novel Nineteen Eighty-Four seems no less relevant today. It was made by the BBC in 1954 and features noted actors Peter Cushing and Donald Pleasence. It was hugely controversial when it came out, and though it may seem tame today, it may have you thinking twice the next time you sit down at your "workstation"...

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

Released in 1968, the animated film "Yellow Submarine" was inspired by the music of the Beatles and featured them in person as well. The spirit of 1960s counterculture is well-represented in this trailer. Enjoy!

John Legend and Lindsey Stirling perform the song "All of Me" at New York City's Kennedy Center.

Samuel Gruber's team films white-tipped sharks and barracuda feeding at night off Cocos Island. Enjoy!