Lopside is a Barkonaut - a specially trained dog who assists human astronauts on missions in space. He and the crew aboard the spaceship Laika are en route to set up an outpost on a distant planet. When the mission takes a disastrous turn, the Barkonauts on board suddenly find themselves completely alone on their severely damaged ship. Survival seems impossible. But these dogs are Barkonauts - and Barkonauts always complete their mission.

Cat and her brother Chicken have always had a very special bond. When Chicken has a meltdown, Cat’s the one who scratches his back and reads his favorite story. She always knows what he needs. Since their mom has had to work double-hard to keep their family afloat after their father passed away, Cat is the glue holding her family together. When a summer trip doesn’t go as planned, Cat and Chicken end up spending three weeks with grandparents they’ve never met. With their help, Cat can be a kid again for the first time in years.

Twelve-year-old Nova is eagerly awaiting the launch of the space shuttle Challenger - it's the first time a teacher is going into space, and kids across America will watch the event on live TV in their classrooms. Nova and her big sister, Bridget, share a love of astronomy and the space program. They planned to watch the launch together. But Bridget has disappeared, and Nova is in a new foster home. While foster families and teachers dismiss Nova as severely autistic and nonverbal, Bridget understands how intelligent and special Nova is, and all that she can't express.

Everyone makes mistakes. But what happens when your mistake hurts someone else? Told in eight perspectives, Operation Frog Effect celebrates standing up and standing together and tells the unforgettable story of how eight very different kids take responsibility for their actions and unite for a cause in which they all believe. 

The suspenseful tale of two courageous kids and one inquisitive scientist who teamed up to stop an epidemic. Eel has troubles of his own: As an orphan and a “mudlark”, he spends his days in the filthy River Thames, searching for bits of things to sell. He’s being hunted by Fisheye Bill Tyler, and a nastier man never walked the streets of London. And he’s got a secret that costs him four precious shillings a week to keep safe. But even for Eel, things aren’t so bad until that fateful August day in 1854.

When Jaxon is sent to spend the day with a mean old lady his mother calls Ma, he finds out she's not his grandmother - but she is a witch! She needs his help delivering baby dragons to a magical world where they'll be safe. There are two rules when it comes to the dragons: Don't let them out of the bag, and don't feed them anything sweet. Before he knows it, Jax and his friends Vikram and Kavita have broken both rules! Will Jax get the baby dragons delivered safe and sound? Or will they be lost in Brooklyn forever? 

Klawde is not your average cat. He's an emperor from another planet, exiled to Earth. He's cruel. He's cunning. He's brilliant...and he's about to become Raj Banerjee's best friend. Whether he likes it or not. 

One hundred and fifty years ago, the first dinosaurs were cloned. Soon after, they replaced humans at the top of the food chain. The only way to survive was to move into underground compounds.... Five years ago, Sky Mundy's father vanished from North Compound without a trace. Now she has just stumbled on a clue that not only suggests his disappearance is just the tip of an even larger mystery but also points directly to the surface. To find her dad - and possibly even save the world - Sky and her best friend, Shawn, must break out of their underground home and venture topside.

Ben Ripley may only be in middle school, but he's already pegged his dream job: CIA or bust. Unfortunately for him, his personality doesn't exactly scream "secret agent". In fact Ben is so awkward, he can barely get to school and back without a mishap. Because of his innate nerdiness, Ben is not surprised when he is recruited for a magnet school with a focus on science - but he's entirely shocked to discover that the school is actually a front for a junior CIA academy.

Sara Martinez is a hacker. She recently broke into the New York City foster care system to expose her foster parents as cheats and lawbreakers. However, instead of being hailed as a hero, Sara finds herself facing years in a juvenile detention facility and banned from using computers for the same stretch of time. Enter Mother, a British spy who not only gets Sara released from jail but also offers her a chance to make a home for herself within a secret MI5 agency. Operating out of a base in Scotland, the City Spies are five kids from various parts of the world.

After tracking down incredible discoveries by Einstein and Darwin, Charlie is back. This time, the great ruler Cleopatra has left behind an extremely valuable and powerful treasure, its location encoded on an ancient stone tablet. In 30 BCE, Cleopatra and her husband, Marc Antony, lost their war against Octavian for control of the Egyptian Empire. However, Cleopatra knew Octavian was really after the mysterious item that was the source of all her wealth and influence, so she hid it before committing suicide. 

Link, Michael, and Dana live in a quiet town. But it's woken up very quickly when someone sneaks into school and vandalizes it with a swastika. Nobody can believe it. How could such a symbol of hate end up in the middle of their school? Who would do such a thing? Because Michael was the first person to see it, he's the first suspect. Because Link is one of the most popular guys in school, everyone's looking to him to figure it out. And because Dana's the only Jewish girl in the whole town, everyone's treating her more like an outsider than ever.

Ellie’s a girl who tells it like it is. That surprises some people, who see a kid in a wheelchair and think she’s going to be all sunshine and cuddles. The thing is, Ellie has big dreams: She might be eating Stouffer’s for dinner, but one day she’s going to be a professional baker. If she’s not writing fan letters to her favorite celebrity chefs, she’s practicing recipes on her well-meaning, if overworked, mother.  

Eleven-year-old Alex Petroski loves space and rockets, his mom, his brother, and his dog, Carl Sagan - named for his hero, the real-life astronomer. All he wants is to launch his golden iPod into space the way Carl Sagan (the man, not the dog) launched his Golden Record on the Voyager spacecraft in 1977. From Colorado to New Mexico, Las Vegas to LA, Alex records a journey on his iPod to show other lifeforms what life on Earth, his Earth, is like.

Although the mission school bans all that is Navajo, Ned secretly clings to his native language and culture. Proudly joining the U.S. Marines in 1943, he becomes a top-secret Navajo Code Talker. During bloody battles for Japanese islands, Ned and his brave band of code-talking brothers save thousands of lives using Navajo encryption the enemy never cracks.