For centuries, people misunderstood how the heart works. As our knowledge grew, heart surgery remained a dangerous medical procedure. Even after organ transplants become common, surgeons struggled to transplant hearts and keep patients alive. But small groups of pioneering doctors attempted this difficult surgery, changing the lives of patients.This graphic history traces their leap forward and the medical world's newest advancements in heart-health technology. Lear...

The game is on at the International TWIST competition! Finalists from around the world have gathered to match wits at the competition's remote lake camp in Ontario, Canada. One night the lead player, Reza Amari, tells a spooky campfire story about a monster and a man who disappears, leaving behind only a set of shrinking footprints in the mud. All the campers love the creepy story and are still talking about it the next morning—until they find out that Reza has vanished! Now it's up to Lol...

The Collective, in possession of the Fragmented board and growing stronger every day, decide to retrieve one of their own: Tommy Goff, held captive by the Revolution in an undisclosed location. To discover the prisoner’s whereabouts, Elliot Addison and his mentor Archard Venin must earn the Revolution’s trust. But Archard has other plans: the destruction of the Revolution, and the death of his old friend, Eldrick Otus.

Omar Grebes and the team meet Fiona Skylark. Shrapnel from a childhood accident is embedded in the girl’s stomach. One of the pieces is from the 900 board, making Fiona a walking, talking Fragment. The team must keep her safe from the Collective. The biggest shock is yet to come, though, when Omar comes face to face with a very much alive Zeke Grebes, who invites them to join ‘The New Revolution!

Omar convinces Eldrick Otus to let him lead the Revolution on a trip to recover a Fragment in Egypt. When they discover the Fragment is resting deep within a forgotten pyramid, Omar sends his two best climbers after it. The Collective, led by Elliot Addison, causes the pyramid’s entrance to collapse. The teens must work together to retrieve the Fragment and find a way out...before the pyramid becomes their crypt!

Things are tough for Dax Ramirez. His dad can't find a job, and the two of them have to live in a homeless shelter. But Dax finds his escape, skating at the area skatepark.

Simone Yang is afraid of heights. Like, REALLY afraid of heights. Even flying alone on an airplane to visit her grandma for the summer freaks her out. So when a creepy old broken-down carnival comes to town, only the idea of impressing her new friends is enough to get Simone to ride the Ferris wheel. But as the ride creaks slowly toward the sky, can Simone keep her cool, or is her worst fear about to come true?

Earth is home to trillions of germs. But for most of human history, people didn't know germs existed! Healers of the past had different ideas about illnesses and their cures. They blamed illnesses on other causes and sometimes tried dangerous treatments.The invention of tools such as the microscope changed everything, allowing doctors and scientists to see germs and study their effects. This vivid graphic history profiles the people who helped discover germs. Disco...

Earth is home to trillions of germs. But for most of human history, people didn't know germs existed! Healers of the past had different ideas about illnesses and their cures. They blamed illnesses on other causes and sometimes tried dangerous treatments.The invention of tools such as the microscope changed everything, allowing doctors and scientists to see germs and study their effects. This vivid graphic history profiles the people who helped discover germs. Disco...

Time to get on the soccer field! Your team is up against a mighty opponent, and your choices can mean the difference between a triumphant victory and a heartbreaking loss. Will you charge up the field with the ball yourself or pass it? Will you jump up for the header or hold off? Try to block the kick or let your goalie go for the save? The pressure is on. Do you have what it takes to lead your team to the big win?

For centuries, people misunderstood how the heart works. As our knowledge grew, heart surgery remained a dangerous medical procedure. Even after organ transplants become common, surgeons struggled to transplant hearts and keep patients alive. But small groups of pioneering doctors attempted this difficult surgery, changing the lives of patients.This graphic history traces their leap forward and the medical world's newest advancements in heart-health technology. Lear...

Time to hit the court! Your basketball team has made it all the way to the championship game. Your choices can mean the difference between a triumphant victory and a heartbreaking loss. Will you take the shot or pass it to your teammate? Will you foul your opponent or let him go to the hoop? The pressure is on. Do you have what it takes to lead your team to the big win?