Humanity clings to the highest mountain peaks, where the wealthy Five Families rule over the teeming lower slopes and rambling junkyards. As the ruthless Lord Kodoc patrols the skies to enforce order, thirteen-year-old Chess and his crew scavenge in the Fog-shrouded ruins for anything they can sell to survive.Hazel is the captain of their salvage raft: bold and daring. Swedish is the pilot: suspicious and strong. Bea is the mechanic: cheerful and brilliant. And Chess is the tetherboy: quiet and quick…and tougher than he looks. But Chess has a secret, one he’s kept hidden his whole life. One that Lord Kodoc is desperate to exploit for his own evil plans. And even as Chess unearths the crew’s biggest treasure ever, they are running out of time...

    His conspiracy theories about the lost technology of Cold War–era rocket scientist Dr. Aloysius Underberg may have cost him his job and forced them to move to the middle of nowhere, but Gillian knows he's right and plans to prove it.When she discovers a missing page from Dr. Underberg's diary in her father's mess of an office, she thinks she's found a big piece of the puzzle—a space-themed riddle promising to lead to Dr. Underberg's greatest invention. Enlisting the help of her skeptical younger brother, Eric, her best friend, Savannah, and Howard, their NASA-obsessed schoolmate, Gillian sets off on a journey into the ruins of Omega City, a vast doomsday bunker deep inside the earth,.But they aren't alone inside its dark and flooded halls. For while Gillian wants to save her dad's reputation by bringing Dr. Underberg's secrets to light, there are others who will stop at nothing to make sure they stay buried . . . forever.

    Not since it was burned to a cinder by the sun, which has mysteriously begun the process of going supernova. The human race has fled to Mars, but this was only a temporary solution while we prepare for a second trip: a one-hundred-fifty-year journey to a distant star, our best guess at where we might find a new home.Liam Saunders-Chang is one of the last humans left on Mars. The son of two scientists who have been racing against time to create technology vital to humanity’s survival, Liam, along with his friend Phoebe, will be on the very last starliner to depart before Mars, like Earth before it, is destroyed.Or so he thinks. Because before this day is over, Liam and Phoebe will make a series of profound discoveries about the nature of time and space, and find out that the human race is just one of many in our universe locked in a desperate struggle for survival.

    Chess has always been the protector over his younger siblings, Emma loves math, and Finn does what Finn does best—acting silly and being adored. They’ve been a happy family, just the three of them and their mom.But everything changes when reports of three kidnapped children reach the Greystone kids, and they’re shocked by the startling similarities between themselves and these complete strangers. The other kids share their same first and middle names. They’re the same ages. They even have identical birthdays. Who, exactly, are these strangers?Before Chess, Emma, and Finn can question their mom about it, she takes off on a sudden work trip and leaves them in the care of Ms. Morales and her daughter, Natalie. But puzzling clues left behind lead to complex codes, hidden rooms, and a dangerous secret that will turn their world upside down.

    She’s alone—left behind in a town that has been mysteriously evacuated and abandoned.With no one to rely on, no power, and no working phone lines or internet access, Maddie slowly learns to survive on her own. Her only companions are a Rottweiler named George and all the books she can read. After a rough start, Maddie learns to trust her own ingenuity and invents clever ways to survive in a place that has been deserted and forgotten.As months pass, she escapes natural disasters, looters, and wild animals. But Maddie’s most formidable enemy is the crushing loneliness she faces every day. Can Maddie’s stubborn will to survive carry her through the most frightening experience of her life?

    Fifty-seven years later, the enigmatic architects disappeared, leaving behind for the people of New York the Old York Cipher—a puzzle laid into the shining city they constructed, at the end of which was promised a treasure beyond all imagining. By the present day, however, the puzzle has never been solved, and the greatest mystery of the modern world is little more than a tourist attraction.Tess and Theo Biedermann and their friend Jaime Cruz live in a Morningstarr apartment house—until a real estate developer announces that the city has agreed to sell him the five remaining Morningstarr buildings. Their likely destruction means the end of a dream long-held by the people of New York. And if Tess, Theo and Jaime want to save their home, they have to prove that the Old York Cipher is real. Which means they have to solve it.

    Earth has been destroyed by a comet, and only a few hundred scientists and their children – among them Petra and her family – have been chosen to journey to a new planet. They are the ones who must carry on the human race.Hundreds of years later, Petra wakes to this new planet – and the discovery that she is the only person who remembers Earth. A sinister Collective has taken over the ship during its journey, bent on erasing the sins of humanity's past. They have systematically purged the memories of all aboard – or purged them altogether.Petra alone now carries the stories of our past, and with them, any hope for our future. Can she make them live again?

    Poor Lilly is out fishing with her trusty sea-cat when greedy raiders pillage the town--and kidnap the prime minister's daughter. Her village blamed, Lilly decides to find the girl. Off she sails, in secret. And with a ransom: a mysterious talking jewel. "If I save his daughter," Lilly reasons, "the prime minister's sure to reward me." Little does Lilly know that it will take more than grit to outwit the tricky, treacherous piratical tribes!

    The bombs destroyed almost everything that came before, so the skill that matters most in White Rock—sometimes it feels like the only thing that matters—is the ability to invent so that the world can regain some of what it’s lost.But Hope is terrible at inventing and would much rather sneak off to cliff dive into the Bomb’s Breath—the deadly band of air that covers the crater the town lives in—than fail at yet another invention.When bandits discover that White Rock has invented priceless antibiotics, they invade. The town must choose whether to hand over the medicine and die from disease in the coming months or to die fighting the bandits now. Hope and her friends, Aaren and Brock, might be the only ones who can escape through the Bomb’s Breath and make the dangerous trek over the snow-covered mountain to get help.For once, inventing isn’t the answer, but the daring and risk-taking that usually gets Hope into trouble might just save them all.

    Eva's great desire is to go aboveground, and her wish comes true, though not as she had imagined. On the surface, Eva goes in search of other humans--she has never met one--and soon meets both friend and foe.

    Which means a reward for Piper if she can get the girl home. The one sure way to the Territories is the 401, a great old beauty of a train. But a ticket costs more coin than Piper could make in a year. And stowing away is a difficult prospect--everyone knows that getting past the peculiar green-eyed boy who stands guard is nearly impossible. Life for Piper just turned dangerous. A little bit magical. And very exciting, if she can manage to survive the journey.

    Recruited by the Hystorians, a secret society that dates back to Aristotle, the kids learn that history has gone disastrously off course.Now it's up to Dak, Sera, and teenage Hystorian-in-training Riq to travel back in time to fix the Great Breaks . . . and to save Dak's missing parents while they're at it. First stop: Spain, 1492, where a sailor named Christopher Columbus is about to be thrown overboard in a deadly mutiny!

    When Nick opens the door to his attic room, he's hit in the head by a toaster. That's just the beginning of his weird experiences with the old junk stored up there. After getting rid of the odd antiques in a garage sale, Nick befriends some local kids-Mitch, Caitlin, and Vincent-and they discover that all of the objects have extraordinary properties. What's more, Nick figures out that the attic is a strange magnetic vortex, which attracts all sorts of trouble. It's as if the attic itself has an intelligence . . . and a purpose.Ultimately Nick learns that the genius Nikola Tesla placed the items-his last inventions-in the attic as part of a larger plan that he mathematically predicted. Nick and his new friends must retrieve everything that was sold at the garage sale and keep it safe. But the task is fraught with peril-in addition to the dangers inherent in Tesla's mysterious and powerful creations, a secret society of physicists, the Accelerati, is determined to stop Nick and alter destiny to achieve its own devious ends. It's a lot for a guy to handle, especially when he'd much rather fly under the radar as the new kid in town.

    But as they trek through the challenging and unforgiving landscape, they learn that they each have what it takes to make the other whole. Luminous and clever, Connect the Stars has Marisa de los Santos and David Teague’s trademark beautiful prose, delicate humor, swooping emotions, and keen middle grade friendships. This novel takes on the hefty topics of the day—bullying, understanding where you fit in, and learning to live with physical and mental challenges—all in a joyous adventure kids will love!

    Finn Whitman and four other teens have been hired as Disney World guides, but with an odd twist: With cutting-edge technology, they have been transformed into hologram projections capable of leading guests around the park. What begins as an exciting theme park job turns into a virtual nightmare as Finn and his pals attempt to thwart an uprising by a menacing group of Disney villains.