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Learn about the history of the Tower of London with iMinds Travel's insightful audio knowledge series. The Tower of London offers an impressive skyline for England's capital city. Much of the awe tourists have for the Tower comes from its vastness. For the Tower of London is not just a single tower, but many buildings within the same complex.

A centre for indigenous Peruvians and Bolivians and the second largest lake in South America, Lake Titicaca is probably best known for its spiritual significance to the Incas. It is one of the highest navigable lakes in the world standing almost four thousand metres above sea level and the mysteries in its depths still draw thousands each year to the sacred site.

Imagine more than a million litres of water dropping each second from cliffs up to 80 metres, or 262 feet, high. Such an image may seem like an impossibility, but such is the majesty of South America’s Iguazu Falls. More expansive than both the Niagara Falls in North America and the Victoria Falls in Africa, The Iguazu Falls is a network of more than 275 falls covering many acres.

Hidden for centuries in the vast Peruvian jungle lies the ancient city of Machu Picchu. It is one of the finest examples of Incan architecture on the continent, preserved and unplundered by the Spanish when they invaded in the sixteenth century. It eluded the Spanish and although it has long been rediscovered, its essence is still shrouded in mystery.

Learn about the story behind rogue traders with iMinds insightful audio knowledge series. A rogue trader is an employee of a company who makes unauthorised trades on behalf of their employer. It is a way employees use their job to make fraudulent trades. Regardless of the economic climate, rogue traders work illegally to make up for company losses they have incurred while trading for their company.

The concept of prosecuting war criminals is not unique to the modern world. Individuals who breached the "rules of war" were tried in ancient Greece, and probably earlier. However, those early prosecutions were hardly examples of fair and impartial international justice. Underpinning the prosecutions, however, was a notion that, even in war, there are certain rules which must be obeyed.

Learn about the art movement called Impressionism with iMindsJNR audio-learning series for younger minds.

Impressionism was a style of art that began in late 19th-century Paris. It was concerned with depicting movement and capturing light in paintings. Impressionist artists included Claude Monet, Hilaire Edgar Degas, Eugene-Louis Boudin, Camille Pissarro, Paul Cezanne, Mary Stevenson Cassatt, and Pierre-Auguste Renoir.

Learn about short selling with iMinds Money's insightful fast knowledge series. Short selling is the practice of selling borrowed stock at a high price and then buying back the stock at a lower price. A short seller expects to profit from the fall in a stock's price. The more common investment practice is to “go long”, that is, to buy stock with the expectation of the price rising in the future. Simply, a short transaction sells high and buys low, while a long transaction buys low and sells high.

A compilation of diverse topics across our 12 categories. You will learn about the Seven Wonders of the World, the invention of the Internet, the history of the Boston Tea Party, the story of the Hollywood blacklist, the cultural phenomenon that is culture jamming, the exciting sport of Parkour, the natural beauty of the aurora borealis, the theory of behavioural economics, the history of the seven archangels, the story behind the Loch Ness monster, and more.

Learn about the development of photography with iMindsJNR audio-learning series for younger minds. Before the photograph was invented, the best way to capture an image was by painting it. You can imagine how long that would take! In 1990, Kodak unveiled the first widely available digital camera. These days, through many advances in technology, we can store hundreds of images on a single camera, ready to print or upload onto a computer whenever we like. But how did we get from paintings to digital photography?

When Alexander Fleming discovered penicillin in 1928, it was a lucky accident. He didn't realize at the time that penicillin would dramatically change the face of medicine and the pharmaceutical industry. Fleming was a researcher studying the natural antibacterial substances produced by the body. He had been working with the bacteria that caused boils. To study the bacteria he grew colonies of it on plates.

Learn about the workings of the Human Body with iMindsJNR audio learning series for younger minds. The human body is more sophisticated than even the best computer. But while scientists know more about the human body than perhaps anything else, there are still mysteries that baffle us. When it comes to the human body, it seems that the more we know, the more we realise we don't know!

Learn about East Germany with iMinds insightful audio knowledge series. In East Germany, it was not uncommon to hear of secret police patrolling the streets dressed as civilians. It was not unusual to find hidden cameras lying in garbage cans. Artistic expression often led to a prison sentence, while learning about the outside world came only through censored films.

Learn about UFOs with iMinds insightful audio knowledge series. On 25 June 1947, Kenneth Arnold, a United States Forest Service employee and private pilot, witnessed nine Unidentified Flying Objects in the sky near Mount Rainier, Washington. This incident was to mark the beginning of a rapid increase in public interest in UFOs. Arnold, who at the time was searching for a downed transport plane, originally thought the objects he saw were jets. However, on closer inspection, he realised the objects had no tails and all but one looked like flat disks.

Learn the history of the Spanish Inquisition with iMinds insightful audio knowledge series. The Spanish Inquisition was a governing authority started by the crown in the late-15th century. It included a network of spies who worked across the state to ensure Spaniards conformed to the accepted behaviour of traditional Catholic subjects. t was relentless in ensuring Catholic orthodoxy within Spain. But why was Spain so self-conscious in ensuring a singular religious identity?

Learn about the crimes of Jack the Ripper with iMinds insightful audio-knowledge series.

In late 1888, a series of brutal murders took place in the impoverished Whitechapel district of London. At least five women were attacked. The killer liked slitting the throats of the victims. The victims' abdomens were then sliced and several organs were removed. This serial killer became known as Jack the Ripper.

Learn about Gold Trading with iMinds Money's insightful fast knowledge series. Gold trading is the investment in and trading of gold as a commodity. It is similar to trading in other commodities such as oil or wood, though there are factors that differentiate it. Gold has represented money and wealth for millennia in different forms. In the present day, we are able to freely own and trade gold in various forms, from gold bars to shares in gold mining companies.

Sydney Harbour is the heart of the city of Sydney, capital of New South Wales. The harbour and its attractions are very much a part of the city’s identity. And while it is very much a working harbour it is also a space for the people of Sydney to relax. The harbour is home to many of the city’s well known events.

The Great Ocean Road extends 400 kilometres, or 248-and-a-half miles, along the southwest coastline of Victoria, which is Australia’s most southern mainland state. It takes the traveller through sandy coastal villages and glitzy holiday towns, from dramatic beach cliff-faces to old-growth rainforests and from surfing havens to waterfalls. To drive the length of it takes about four hours from near Victoria’s capital city of Melbourne to the impressive coastal rock structures known as the Twelve Apostles.

Uluru is the indigenous Australian name for an enormous rock formation found in central Australia. Made from sandstone, Uluru is a rock monolith or an ‘island mountain’, a formation that geologists refer to as a monadnock. It stands 318 m (986 ft) high and has a circumference of 8 km (5 miles). It is located 335 km (208 mi) south west of the nearest rural centre, the large town of Alice Springs.