Ever since he began publishing scifi stories to his website, The Martian author Andy Weir has been using unorthodox approaches to deliver his stories to audiences. His latest collection is not found online or on a bookshelf, but in a new app named Tapas, and we’ve got an exclusive excerpt from one of its stories.

The weeks between September and mid-November are a bountiful time for book releases, with new works from Alan Moore, Connie Willis, Christopher Priest, Ken Liu, Margaret Atwood, and Fran Wilde, to name just a few. Clear some space in your schedule, and on your shelves—you’re going to need it.

On Amazon right now there are listings for three new books under a banner called “Pottermore Presents.” They look like three themed volumes of writings from J.K. Rowling about the world of Harry Potter collected from the site.

It’s Friday, and there’s no better time to have a frank, no-holds-barred discussion about all the weird and wonderful sex that takes place every single day, across all species, on this glorious blue planet we call home. Dr. Carin Bondar, biologist and host of the popular web series Wild Sex, is here today to take your…

The only downside to finding a really good book to read is that it will be over before you want it to be. But that won’t be the case with puzzle designer Brady Whitney’s Codex Silenda. Even though the wooden book only has five pages, you’ll need to solve a complex mechanical puzzle on each one before you can turn to…

At some point while reading Harry Potter and the Cursed Child, it becomes abundantly clear that Scorpius Malfoy is the best-written character in the whole thing. He’s the most original part of the whole play.

io9 is proud to present fiction from Lightspeed Magazine. Once a month, we feature a story from Lightspeed’s current issue, and this month’s selection is “Those Brighter Stars” by Mercurio D. Rivera. You can read the story below or you can listen to the podcast. Enjoy!

Harry Potter and the Cursed Child is like pure Potter concentrate; that is to say, the plot twists come thick and they come fast, and they are all pretty much ridiculous. Here are the absolute craziest moments from the new play—some awesome, some outrageously horrible, but all of them completely insane.

“It has been a helluva 20 years,” George R.R. Martin reflects in his latest Not a Blog post, marking the 20th anniversary of the publication of a little something called A Game of Thrones. The author celebrates his landmark book with a special new edition, with an intro by John Hodgman and dozens of gorgeous…

The play Harry Potter and the Cursed Child has been in production for a bit, but the script was released in book form yesterday. The plot is full of big revelations, but we’ve decided to focus on the information that isn’t actually a spoiler—just some the events that have occurred in-between the end of Deathly Hallows…

The end of summer is slowly approaching, but there’s no wrong time to do some lazy-day reading. Or, as the case may be, stay-up-all-night-because-you-can’t-put-the-book-down reading. Here are 15 science fiction and fantasy books to add to your shelf (or e-reader) this month, in chronological order.

Jurassic Park author Michael Crichton passed away in 2008, but his found the manuscript for a novel titled Dragon Teeth in his archives, which will be released next year. It is apparently complete enough to be published without major editing or the publisher hiring another writer to finish the novel.

The second installment in Chuck Wendig’s trilogy set after Return of the Jedi, Aftermath: Life Debt follows Norra Wexley and her team as they search for the missing Han Solo. We talked to Wendig about writing the novels, integrating his original idea with the existing Star Wars universe, and the effect of The Force…