Ibn Khaldun (1332-1406) is generally regarded as the greatest intellectual ever to have appeared in the Arab world - a genius who ranks as one of the world's great minds. Yet the author of the Muqaddima, the most important study of history ever produced in the Islamic world, is not as well known as he should be, and his ideas are widely misunderstood. In this groundbreaking intellectual biography, Robert Irwin provides an engaging and authoritative account of Ibn Khaldun's extraordinary life, times, writings, and ideas.

For millennia the location of the Nile River’s headwaters was shrouded in mystery. In the 19th century, there was a frenzy of interest in ancient Egypt. At the same time, European powers sent off waves of explorations intended to map the unknown corners of the globe—and extend their colonial empires.

After discovering six gold Roman coins buried in the mud of the Devil's Dyke, Barnabas Sackett enthusiastically invests in goods that he will offer for trade in America. But Sackett has a powerful enemy: Rupert Genester, nephew of an earl, wants him dead. A battlefield promise made to Sackett’s father threatens Genester’s inheritance. So on the eve of his departure for America, Sackett is attacked and thrown into the hold of a pirate ship.

As the most celebrated European to explore Asia, Marco Polo was the original global traveler and the earliest bridge between East and West. A universal icon of adventure and discovery, he has inspired six centuries of popular fascination and spurious mythology. Now, from acclaimed author Laurence Bergreen, comes the first fully authoritative biography of one of the most enchanting figures in world history.

"Dr. Livingstone, I presume?" So goes the signature introduction of New York Herald star journalist Henry Morton Stanley to renowned explorer Dr. David Livingstone, who had been missing for six years in the wilds of Africa. Into Africa ushers us into the meeting of these remarkable men. In 1866, when Livingstone journeyed into the heart of the African continent in search of the Nile's source, the land was rough, unknown to Europeans, and inhabited by man-eating tribes.

"It doesn't take an Einstein to understand modern physics," says Professor Wolfson at the outset of these 24 lectures on what may be the most important subjects in the universe: relativity and quantum physics. Both have reputations for complexity. But the basic ideas behind them are, in fact, simple and comprehensible by anyone. These dynamic and illuminating lectures begin with a brief overview of theories of physical reality starting with Aristotle and culminating in Newtonian or "classical" physics.

The Crusades is an authoritative, accessible single-volume history of the brutal struggle for the Holy Land in the Middle Ages. Thomas Asbridge - a renowned historian who writes with "maximum vividness" (Joan Acocella, The New Yorker) - covers the years 1095 to 1291 in this big, ambitious, listenable account of one of the most fascinating periods in history.

The foundations of modern knowledge - philosophy, math, astronomy, geography - were laid by the Greeks, whose ideas were written on scrolls and stored in libraries across the Mediterranean and beyond. But as the vast Roman Empire disintegrated, so did appreciation of these precious texts. Christianity cast a shadow over so-called pagan thought, books were burned, and the library of Alexandria, the greatest repository of classical knowledge, was destroyed. Yet some texts did survive and The Map of Knowledge explores the role played by seven cities around the Mediterranean....

Auckland Island is a godforsaken place in the middle of the Southern Ocean, 285 miles south of New Zealand. With year-round freezing rain and howling winds, it is one of the most forbidding places in the world. To be shipwrecked there means almost certain death. In 1864, Captain Thomas Musgrave and his crew of four aboard the schooner Grafton wreck on the southern end of the island. Utterly alone in a dense coastal forest, plagued by stinging blowflies and relentless rain, Captain Musgrave inspires his men to take action.

Jack loves his childhood toy Dur Pig. DP has always been there for him, through good and bad. Until one Christmas Eve something terrible happens - DP is lost. But Christmas Eve is a night for miracles and lost causes, a night when all things can come to life...even toys. And Jack’s newest toy - the Christmas Pig (DP’s annoying replacement) - has a daring plan: Together they’ll embark on a magical journey to seek something lost and to save the best friend Jack has ever known....

The kingdom of Cornucopia was once the happiest in the world. It had plenty of gold, a king with the finest moustache you could possibly imagine, and butchers, bakers, and cheesemongers whose exquisite foods made a person dance with delight when they ate them. Everything was perfect - except for the misty Marshlands to the north, which, according to legend, were home to the monstrous Ickabog. Anyone sensible knew that the Ickabog was just a myth to scare children into behaving. But the funny thing about myths is that sometimes they take on a life of their own.

Olaf, Arendelle’s adorable snowman, loves to read. One day, an unexpected message leads Olaf and his friends Anna, Kristoff, and Sven on a quest for a place known as Haus Biblio, described as a “sea of stories”. This Audible Original spans the group’s journey to Haus Biblio as they cross over mountains, search for monsters under bridges, and have conversations with friendly sheep. During his travels, Olaf makes new friends and hears lots of exciting stories along the way.

If you were asked to choose the most fabulous character in English literature, who would it be? Perhaps the one and only Ichabod Crane. When this superstitious schoolmaster moves into the quiet village of Sleepy Hollow, he quickly starts vying for the affection of heiress Katrina Van Tassel. However, this puts him in the path of town bully Brom Bones. Will Ichabod win Katrina's heart, or will he fall victim to the small town's big legend—the Headless Horseman?

Belle lives in a beautiful castle with a Beast and Enchanted Objects that have come to life. But that isn’t the strangest thing about the castle. Rose petals and leaves have begun to mysteriously appear in random places, leading Belle and her companions Cogsworth the clock and Lumiere the candelabra on a hunt for an intruder.