In the near future, four teenagers discover that their emotions have been weaponized and that they have been genetically bred to end the alien occupation of Earth.

Mori and her friends live a normal life on Firefly Lane in Old Harmonie, a utopian community where every kid knows he or she is genetically engineered to be better and smarter, but when a strangely perfect new girl named Ilana moves in, the friends begin to question the only world they have ever known.

When Ellie, who loves to invent and build things, decides to build a doghouse as a gift, she needs to get past the boys-against-the-girls neighborhood feud and ask for help.

It's a new school year with the same old problems: the school is going to run out of money! But a local engineering competition might just keep them funded for another year. Can Millie and her friends Pearl and Halinka invent a way out of the mess? With some guidance from their eccentric headmistress Miss Bunsen, anything seems possible.

After modern science turns every human into a genetic time bomb with men dying at age twenty-five and women dying at age twenty, girls are kidnapped and married off in order to repopulate the world.

When Ellie and her friends help elderly Mrs. Curran around the house, Ellie cannot resist using her engineering prowess but it is no fun for the girls when Toby gets the credit.

Alek and Deryn encounter obstacles on the last leg of their round-the-world quest to end World War I, reclaim Alek's throne as prince of Austria, and finally fall in love.

After escaping her abusive family's interstellar merchant ship, seventeen-year-old Pendt lands on a remote space station run by the Brannick twins, and together they make plans to thwart the destinies they never wanted.

"On a very hot day, Min, a budding engineer, builds a machine that draws water from a well and into a swimming pool"--

As the Apollo 11 mission draws to a close there is a crisis at the tracking station on Guam: the antenna that will track the spacecraft during reentry, and allow mission control to communicate with the astronauts is stuck--and ten-year-old Marty is the only one small enough to reach in and grease the ball bearings that allow the antenna to move.