From Emily Calandrelli—host of Xploration Outer Space, correspondent on Bill Nye Saves the World, and graduate of MIT—comes the third novel in a fun illustrated chapter book series about an eight-year-old girl with a knack for science, math, and solving mysteries with technology. Third grader and inventor extraordinaire Ada Lace likes nothing more than to tinker with mechanics like her robot, George. Her latest project is to fix up a ham radio, something that she could use to contact people on this planet…and beyond. The only problem is that she just can’t get it to work properly. During a sleepover, Ada’s best friend Nina hears something strange coming from the radio in the middle of the night. A distant voice says, “Release the swarm!” convincing Nina that aliens are about to invade planet Earth. Could Ada and Nina have stumbled upon something…extraterrestrial?

From Emily Calandrelli—host of Xploration Outer Space, correspondent on Bill Nye Saves the World, and graduate of MIT—comes the first novel in a brand-new chapter book series about an eight-year-old girl with a knack for science, math, and solving mysteries with technology. Ada Lace—third-grade scientist and inventor extraordinaire—has discovered something awful: her neighbor’s beloved Yorkie has been dognapped! With the assistance of a quirky neighbor named Nina (who is convinced an alien took the doggie) and her ever-growing collection of gadgets, Ada sets out to find the wrongdoer. As their investigation becomes more and more mysterious, Ada and Nina grow closer, proving that opposites do, in fact, attract.

Eight-year-old Ada Lace is determined to win the robot-building competition but is struggling with her art class so she soon wonders if there might be a way to use both science and art to solve her problems.

From Emily Calandrelli—Emmy-nominated host of Xploration Outer Space, correspondent on Bill Nye Saves the World, and graduate of MIT—comes the fourth novel in a fun illustrated chapter book series about an eight-year-old girl with a knack for science, math, and solving mysteries with technology. Third grader and inventor extraordinaire Ada Lace has a new social studies teacher—who loves group projects. While most of the class has constructed regular dioramas with clay and construction paper, Ada, her best friend Nina, and sometimes nemesis Milton have built a complex scale model of an historic silver mine. But when Milton reveals that he added his “old Milton touch” on their project right before turning it in, Ada worries that he has sabotaged their work. In a desperate attempt to save their project, Ada and Nina use their combined creative and technical prowess to perform a heist and break into their teacher’s supply closet after school. Do the two friends have what it takes to deceive the school’s security system? Or will they get caught trying to pull off this seemingly impossible mission.

From Emily Calandrelli—Emmy-nominated host of Xploration Outer Space, correspondent on Bill Nye Saves the World, and graduate of MIT—comes the fifth novel in a fun illustrated chapter book series about an eight-year-old girl with a knack for science, math, and solving mysteries with technology. Third grader and inventor extraordinaire Ada Lace is on spring break. But it’s just a little less relaxing than she’d imagined. Nina is beside herself with excitement about meeting her favorite artist and enlists Ada and Mr. Peebles’s coding-whiz nephew to help revamp her online portfolio. When Nina finally meets Miroir, he snubs her, and her confidence is shaken—but not enough to miss the art show opening. While there, Ada spots a suspiciously familiar painting that may mean Miroir isn’t the original he claims to be. Will the friends be able to reveal the artist’s true nature, before he fools someone else?

A #1 New York Times bestseller “This little mouse may well inspire some big dreams.” —Kirkus Reviews “In this picture book based on the space shuttle Endeavor…Meteor is one of the smallest mice, but the most hardworking…the values of being small, useful, solving problems, and working hard—as opposed to being big and strong—will inspire young readers.” —School Library Journal “Inspired by this real-life mouse, Kelly’s first children’s book tells the story of Meteor, a lightly anthropomorphized rodent who turns his tininess into an advantage when an important key gets stuck in a crack between two monitors…textured images and vivid portraits that make it absolutely clear that space travel is a larger-than-life adventure.” —Publishers Weekly A heartwarming picture book tale of the power of the small, from bestselling author and retired NASA astronaut Commander Mark Kelly. Astronaut Mark Kelly flew with “mice-tronauts” on his first spaceflight aboard space shuttle Endeavour in 2001. Mousetronaut tells the story of a small mouse that wants nothing more than to travel to outer space. The little mouse works as hard as the bigger mice to show readiness for the mission . . . and is chosen for the flight! While in space, the astronauts are busy with their mission when disaster strikes—and only the smallest member of the crew can save the day. With lively illustrations by award-winning artist C. F. Payne, Mousetronaut is a charming tale of perseverance, courage, and the importance of the small!

A #1 New York Times Bestseller A Wall Street Journal Bestseller A USA Today Bestseller The creators of the New York Times bestselling picture books Rosie Revere, Engineer and Iggy Peck, Architect are back with a story about the power of curiosity in the hands of a child who is on a mission to use science to understand her world. Ada Twist, Scientist, from powerhouse team Andrea Beaty and David Roberts, is a celebration of STEM, perseverance, and passion. Like her classmates, builder Iggy and inventor Rosie, scientist Ada, a character of color, has a boundless imagination and has always been hopelessly curious. Why are there pointy things stuck to a rose? Why are there hairs growing inside your nose? When her house fills with a horrific, toe-curling smell, Ada knows it’s up to her to find the source. What would you do with a problem like this? Not afraid of failure, Ada embarks on a fact-finding mission and conducts scientific experiments, all in the name of discovery. But, this time, her experiments lead to even more stink and get her into trouble! Inspired by real-life makers such as Ada Lovelace and Marie Curie, Ada Twist, Scientist champions girl power and women scientists, and brings welcome diversity to picture books about girls in science. Touching on themes of never giving up and problem solving, Ada comes to learn that her questions might not always lead to answers, but rather to more questions. She may never find the source of the stink, but with a supportive family and the space to figure it out, she’ll be able to feed her curiosity in the ways a young scientist should. Iggy Peck and Rosie Revere have earned their places among the most beloved children’s characters, and they have inspired countless kids and adults to follow their dreams and passions. Now in her own charming and witty picture book, determined Ada Twist, with her boundless curiosity for science and love of the question “Why?,” is destined to join these two favorites. The book is the perfect tool to remind both young girls and women that they have the intelligence and perseverance to achieve their dreams.