As high street and main street businesses continue to suffer, there's a new rule in business: forget about the general audience and instead stake out an identifiable niche. Woolworths suffered from a lack of identity and found that low quality and low price wasn't enough; General Motors crashed as motorists failed to distinguish between cars in their range. Yet HBO, Moleskine and specialist media like The Economist have all succeeded by building their authority over narrow areas of expertise and cultivating a passionate following - and their profits have mushroomed. Fascinating and thought-provoking, Niche is a superb examination of how innovation and profitability are moving to a series of tightly defined but globally scattered niches, bound together by the reach of the net.

'I love these books ... the best books ever. Brilliant' Chris Evans QI is the smartest comedy show on British television, but few people know that we're also a major legal hit in Australia, New Zealand, Israel and Africa and an illegal one on BitTorrent. We also write books and newspaper columns; run some (frankly thriving, if we do say so ourselves) social media pages; and some of us appear on The Zoe Ball Breakfast Showon BBC Radio 2 every week to answer your questions. At the core of what we do is the astonishing fact - painstakingly researched and distilled to a brilliant and shocking clarity. In Einstein's words: 'Everything should be as simple as possible, but not simpler.' Did you know that: Cows moo in regional accents. The entire internet weighs less than a grain of sand. Tintin is called Tantan in Japanese because TinTin is pronounced 'Chin chin' and means penis. The water in the mouth of a blue whale weighs more than its body. Under the Wildlife and Countryside Act of 1981, it is explicitly illegal in Britain to use a machinegun to kill a hedgehog. 1,227 QI Facts To Blow Your Socks Off will make you look at the universe (and your socks) in an alarming new way.

The Third Book of General Ignorance gathers together 180 questions, both new and previously featured on the BBC TV programme's popular 'General Ignorance' round, and show why, when it comes to general knowledge, none of us knows anything at all. Who invented the sandwich? What was the best thing before sliced bread? Who first ate frogs' legs? Which cat never changes its spots? What did Lady Godiva do? What can you legally do if you come across a Welshman in Chester after sunset?

The eye-popping, gob-smacking, rib-tickling phenomenon that is QI serves up a brand new selection of 1,423 facts to bowl you over.

Iceland imports ice cubes

A group of ladybirds is called a loveliness

It is illegal in Saudi Arabia to name a child Sandi

Eight billion particles of fog can fit into a teaspoon

People who read books live longer than people who don't

Prince Philip was born on a kitchen table in Corfu

No human beings have ever had sex in space

Netflix's biggest competitor is sleep

Mice sigh up to 40 times an hour

Hop, skip and jump into this wonderfully curious grand tour of the world of sports, brought to you by QI Elves James Harkin and Anna Ptaszynski. From sport's weirdest rules to its most unlikely heroes, each chapter of Everything to Play For is brimming with surprising facts and intriguing stories, including the psychology of football chants, comically large cricket bats, pole-vaulting priests and professional pillow-fighting. Even if you've never asked yourself what David Attenborough has to do with yellow tennis balls, why Victorian doctors feared the outbreak of 'bicycle face'; or what led ancient Egyptian athletes to have their spleens removed, this book will give you the astonishing answers, and plenty more besides.

'I love these books ... the best books ever. Brilliant' Chris Evans 1,399 QI Facts To Make Your Jaw Drop by John Lloyd, John Mitchinson and James Harkin is packed with even more fascinating facts. Whilst you're bending over to grab your socks following the succes of 1,227 QI Facts to Blow Your Socks Off, don't forget pick up your jaw as the QI team returns with a fresh stack of facts to astonish and enlighten. Did you know that: Pigs suffer from anorexia. It is impossible to whistle in a spacesuit. The first computer mouse was made of wood. Rugby School's first official rugby kit in 1871 included a bow tie. Lord Kitchener had four spaniels called Shot, Bang, Miss and Damn. J. K Rowling has no middle name. If there are any facts you don't believe, or if you want to know more about them, all the sources can be found on QI's website.

On 19 August 2014, a member of the jihadist rebel group known as ISIS uploaded a video to YouTube. Entitled 'Message to America', the clip depicted the final moments of the life of kidnapped American journalist James Foley - and the gruesome aftermath of his beheading at the hands of a masked executioner. Foley's murder - and the other choreographed killings that would follow - captured the world's attention, and Islamic State's campaign of kidnapping exploded into regional war. Based on three years of on-the-ground reporting from every side of the Syrian conflict, Hunting Season is James Harkin's quest to uncover the truth about how and why Islamic State came to target Western hostages, who was behind it and why almost no one outside a small group of people knew anything about it until it was too late. He reveals how the campaign of kidnapping and the development of Islamic State were joined at the hip from the beginning. The book is an utterly absorbing account of the world's newest and most powerful terror franchise and what it means for modern war.

'I love these books ... the best books ever. Brilliant' Chris Evans This is an astonishing trove of the strangest, funniest, and most improbable tidbits of knowledge from the clever lot at the hugely popular BBC quiz show QI. The sock-blasting, jaw-dropping, side-swiping phenomenon that is QI serves up a sparkling new selection of 1,342 facts to leave you flabbergasted. Did you know that: Trees sleep at night. Google searches for 'How to put on a condom' peak at 10.28pm. There is no word for time in any Aboriginal language. Scotland has 421 words for snow. Emoji is the fastest growing language in history. Astronauts wear belts to stop their trousers falling up. The name Donald means 'ruler of the world'. Tanks are exempt from London's Congestion charge. The world's only Cornish pasty museum is in Mexico. When you blush so does the lining of your stomach. A group of unicorns is called a blessing. If there are any facts you don't believe, or if you want to know more about them, all the sources can be found on www.qi.com

Everything is interesting if looked at in the right way. Laugh yourself clever with this astonishing box set collection of seven jaw-dropping, mind-boggling, rib-tickling QI fact books in hardcover.

QI is the smartest comedy show on television. Over the last seven years, the QI team have blown your socks off, made your jaw drop and knocked you sideways with their astonishing fact books. Now they are going to tickle you pink with this terrific treasury of 10,000 QI facts, which collects all seven books in the series. This brilliant box set includes: 1,227 QI Facts, 1,339 QI Facts, 1,411 QI Facts, 1,234 QI Facts, 1,342 QI Facts, 1,432 QI Facts, and 2,024 QI Facts.

Together they form one of the largest collections of interesting one-line facts in the history of the human race. Get stuck in and you too can appear to be a genius in just three months, for less than the price of a taxi ride from Piccadilly Circus to Heathrow airport.