Books like Zenith by Julie Bertagna

Hazel stands at a crossroads. She and the remaining crew of the Argo II could return home with the Athena Parthenos statue and try to stop Camp Half-Blood and Camp Jupiter from going to war. Or they could continue their quest to find the House of Hades, where they might be able to open the Doors of Death, rescue their friends Percy and Annabeth from Tartarus, and prevent monsters from being reincarnated in the mortal world. Whichever road they decide to take, they have to hurry, because time is running out. Gaea, the bloodthirsty Earth Mother, has set the date of August 1 for her rise to power. Annabeth and Percy are overwhelmed. How will the two of them make it through Tartarus? Starving, thirsty, and in pain, they are barely able to stumble on in the dark and poisonous landscape that holds new horrors at every turn. They have no way of locating the Doors of Death. Even if they did, a legion of Gaea's strongest monsters guards the Doors on the Tartarus side. Annabeth and Percy can't exactly launch a frontal assault. Despite the terrible odds, Hazel, Annabeth, Percy, and the other demigods of the prophecy know that there is only one choice: to attempt the impossible. Not just for themselves, but for everyone they love. Even though love can be the riskiest choice of all. Join the demigods as they face their biggest challenges yet in The House of Hades, the hair-raising penultimate book in the best-selling Heroes of Olympus series.

On a remote, icy planet, the soldier known as Breq is drawing closer to completing her quest. Once, she was the *Justice of Toren*--a colossal starship with an artificial intelligence linking thousands of soldiers in the service of the Radch, the empire that conquered the galaxy. Now, an act of treachery has ripped it all away, leaving her with one fragile human body, unanswered questions, and a burning desire for vengeance. Sequels: Ancillary Sword; Ancillary Mercy.

Ever since the gods of Ancient Egypt were unleashed in the modern world, Carter Kane and his sister Sadie have been in trouble. As descendants of the House of Life, the Kanes have some powers at their command, but the devious gods haven't given them much time to master their skills at Brooklyn House, which has become a training ground for young magicians. And now their most threatening enemy yet - the chaos snake Apophis - is rising. If they don't prevent him from breaking free in a few days' time, the world will come to an end. In other words, it's a typical week for the Kane family. To have any chance of battling the Forces of Chaos, the Kanes must revive the sun god Ra. But that would be a feat more powerful than any magician has ever accomplished. First they have to search the world for the three sections of the Book of Ra, then they have to learn how to chant its spells. Oh, and did we mention that no one knows where Ra is exactly? Narrated in two different wisecracking voices, featuring a large cast of new and unforgettable characters, and with adventures spanning the globe, this second installment in the Kane Chronicles is nothing short of a thrill ride.

Now cured, Fiona Tarsis and her twin Jonah set out to find their mother with the help of Bowen and former neighbor Jacqui, planning to spread the cure along the way--but raiders will do anything to stop them and new ally Kevin may have ties to those raiders.

A paleoclimatologist makes predictions about how environmental choices in the twenty-first century will affect life on the planet throughout the distant future, drawing on geological history to argue that global cooling poses a more significant threat.

Vega Jane and her friend Delph have taken the map that Quentin Harris left them and set out from the town of Wormwood, determined to brave the Quag and find freedom on the other side--but the Quag was designed to keep the town people in, and it is filled with bloodthirsty creatures and sinister magic, and it is not going to let them escape unscathed.

The desert is no place for ocean-dwelling Kampii like Aluna and Hoku, especially now that Aluna has secretly started growing her tail. But the maniacal Karl Strand is out to conquer the Above World, and the horselike Equians are next on his list. Aluna, Hoku, and their friends — winged Calli and Equian exile Dash — race to the desert city of Mirage, intent on warning the Equians. When they arrive, Strand’s clone, Scorch, has gotten there first. Now the Equian leader has vowed to take all his people to war as part of Strand’s army. Any herd that refuses to join him by the time of the desert-wide competition known as the Thunder Trials will be destroyed. To have any chance of defeating Scorch and convincing the Equians to switch sides, the four friends must find a way to win the Trials. The challenge seems impossible. But if they fail, the desert — and possibly all of the Above World — will be lost to Karl Strand forever. Here is the action-packed follow-up to Above World, which Kirkus Reviews called "a thrilling sci-fi adventure. Imaginative and riveting."

Father John controls everything inside The Fence. And Father John likes rules. Especially about never talking to Outsiders. Moonbeam is starting to doubt, though. She's starting to see the lies behind Father John's words. Then a fire engulfs life as she knew it, and Moonbeam is forced outside The Fence into a world she does not recognize.

Twelve-year-old Alice Dare is one of 300 seven- to sixteen-year-olds evacuated to Mars to attend school and train as soldiers, safe from the war with Earth's invading aliens, the Morrors, but when all of the adults and robots mysteriously disappear, the youths must survive on their own.

Charlotte leads her friends to New Orleans, where the resistance against the Empire is based. There, she must figure out where her true loyalties lie.

In a future of high technology and genetic modification the Coral Kampii, like legendary mermaids, live isolated from the Above World, but when the devices that allows them to breathe underwater start to fail, thirteen-year-old Aluna and her friend Hoku go to that forbidden place to find help.