Chris Hadfield, the former astronaut and YouTube star who has 1.2 million Twitter followers, will become one of the first authors to try and sell their books directly on Twitter. (Photograph: Commander Chris Hadfield/YouTube)

Do tweets sell books? It has long been a question for publishers and authors, who have started relying heavily on social media to promote books as the(...)

More than two dozen state attorneys general have joined the US Department of Justice in suing Apple over e-books price fixing. Those states, as well as a group of consumers, are seeking up to $840 million in damages

A US appeals court has rejected Apple’s bid to delay a July trial to determine damages after the company was found to have colluded to fix the prices (...)

A Barnes & Noble Nook e-book reader, right, and the Amazon Kindle. A federal judge has ruled that Apple conspired to raise the retail prices of e-books in violation of antitrust law, and called for a trial on damages. Photograph: Daniel Acker/Bloomberg.

A federal judge has ruled that Apple conspired to raise the retail prices of e-books in violation of antitrust law, and called for a trial on damages(...)

Apple is going to trial alone after five US publishers agreed to eliminate prohibitions on ebook wholesale discounts. Photograph: Scott Eells/Bloomberg

Apple goes to trial tomorrow in the US over allegations by federal and state authorities that it conspired with publishers to raise the price of ebook(...)