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Savais-tu que... Ankylosaurus est connu pour être un dinosaure possédant l'une des cuirasses les plus résistantes et qu'il était bâti comme un char d'assaut ? Il était extrêmement bien protégé, même contre les carnivores (les mangeurs de viande) les plus...

Savais-tu que... Spinosaurus était un dinosaure semi-aquatique, c'est-à-dire qu'il vivait sur la terre et dans l'eau? Tu apprendras bientôt pourquoi il passait une partie de son temps dans l'eau...

Savais-tu que... Megalosaurus, un dinosaure de la taille d'une dinde qui chassait en bande, était couvert de plumes, comme un oiseau, mais ne pouvait voler car ses bras étaient trop courts et n'avaient pas la forme et la structure requises pour battre...

Savais-tu que... Triceratops avait l'un des plus gros crânes de tous les animaux terrestre ayant existé? Le plus gros connu fait plus de 2,5 mètres de long!

Savais-tu que... Stegosaurus peut être décrit comme un dinosaure ayant un corps presque aussi gros qu'un autobus, une tête de la taille d'un cheval et un cerveau petit comme une noix de Grenoble? Si cela paraît bien étrange, tu découvriras dans les...

Savais-tu que... Leaellynasaura, un herbivore de la taille d'une dinde, survivait dans une partie de l'Australie qui se trouvait beaucoup plus au sud pendant le Crétacé inférieur? À l'époque, cette masse de terre était rattachée à un vaste continent...

Savais-tu que... Coelophysis était l'un des plus anciens dinosaures, et l'un des plus étudiés en raison des milliers de fossiles qui ont été trouvés au même endroit ?

Savais-tu que... Diplodocus est l'un des plus longs dinosaures à avoir existé? C'est aussi l'un des plus connus, car nous avons trouvé beaucoup de squelettes presque complets !

For centuries, astronomers have placed a special importance on the other planets of the solar system. But with the advent of spacecraft and the tremendous missions undertaken by the Voyager and Cassini probes, astronomers have discovered that the natural...

"Should you encounter any of the plants in this book, do not treat them lightly. They can kill you. Or cause you unbearable agony. Or land you in jail. Consider yourself warned." Explore the strange and remarkable stories of poisonous and even deadly...

"For of all gainful professions, nothing is better, nothing more pleasing, nothing more delightful, nothing better becomes a well-bred [person] than agriculture."--Marcus Tullius Cicero, ancient Roman orator, ca. 44 BCE "There is the place where his...

". . . with the lighter catapults, which had a long range, he drove back those who were constructing the wall along the harbour, and with the ballistae he shook or destroyed the engines of the enemy."--Diodorus Siculus, Greek historian, first century...

"The discovery both of [geometry] and of the other sciences proceeded from utility."--Proclus Lycius, Greek philosopher, fifth century CE"Geometry is the knowledge of the eternally existent."--Plato, Republic, ca. 380 BCEAncient peoples around the world...

"In medical knowledge the Egyptian leaves the rest of the world behind." -Homer, Greek poet"I swear by Apollo the physician . . . and all the gods and goddesses, and call them to witness that . . . I will prescribe treatments to the best of my ability...

Tae has moved twice in his life. First, from South Korea to the United States when he was adopted as a baby, and then to a new town before he starts high school. In Tae's new school, he's one of the youngest players, and the only person of color, trying...

Tae has moved twice in his life. First, from South Korea to the United States when he was adopted as a baby, and then to a new town before he starts high school. In Tae's new school, he's one of the youngest players, and the only person of color, trying...

Chiara is gliding through her senior year with ease, with a great babysitting job, a loyal best friend, a loving Indian-Italian immigrant family, and a shot at the summer ice-skating camp of her dreams. Then, out of nowhere, she starts having violent and...

Chiara is gliding through her senior year with ease, with a great babysitting job, a loyal best friend, a loving Indian-Italian immigrant family, and a shot at the summer ice-skating camp of her dreams. Then, out of nowhere, she starts having violent and...

After being sexually assaulted at a party, Mara started experiencing paranoia and delusional thoughts which resulted in a public psychotic episode freshman year. Now a senior in high school, Mara feels like an outcast who would rather keep to herself...

After being sexually assaulted at a party, Mara started experiencing paranoia and delusional thoughts which resulted in a public psychotic episode freshman year. Now a senior in high school, Mara feels like an outcast who would rather keep to herself...

Lacey Lace Stewart knows who she is. She's the star of her high school's lacrosse team, she's confident and brash, and she doesn't seem to worry about what other people think. Lace tries hard in school, works weekends at a coffee shop, and is counting on...

Gabi is furious about her parents divorcing and moving her away from her hometown, her friends, and her school. But on the day she moves away, a shooter opens fire on Gabi's old school, killing her American History classmates. She knows she should have...

Sometimes in high school, all you want is to be invisible. Being invisible might be the biggest problem of all for Natalie. She has a disability that causes chaos to her body on the inside but leaves her unmarked on the outside. She's learned to hide her...

Lacey Lace Stewart knows who she is. She's the star of her high school's lacrosse team, she's confident and brash, and she doesn't seem to worry about what other people think. Lace tries hard in school, works weekends at a coffee shop, and is counting on...

Gabi is furious about her parents divorcing and moving her away from her hometown, her friends, and her school. But on the day she moves away, a shooter opens fire on Gabi's old school, killing her American History classmates. She knows she should have...

Sometimes in high school, all you want is to be invisible. Being invisible might be the biggest problem of all for Natalie. She has a disability that causes chaos to her body on the inside but leaves her unmarked on the outside. She's learned to hide her...

In the near future, the tides are rising, the weather is out of control, and the rain is poison. Mal lost his family in a storm and now lives with other young people, trying to survive the changing world. Faced with the threat of the rising water and his...

In the near future, the tides are rising, the weather is out of control, and the rain is poison. Mal lost his family in a storm and now lives with other young people, trying to survive the changing world. Faced with the threat of the rising water and his...

It's taken four hundred years of travel, but the starship Venture has finally arrived at its destination, Beta Earth, an uninhabited, untouched planet. The first night seventeen-year-old engineer Ursa is on Beta Earth, she encounters a dead body. She's...

Dale Porter is working hard to get into college, but her studies are interrupted when a series of strange sinkholes open in Foggy Creek. Her dog and other local animals come down with an illness that seems other-worldly. Soon the town is swarming with...

Mario is a star running back for Foggy Creek High. But when his classroom performance falls short, he risks missing the biggest game of the year. This problem is weighing on him when he runs headlong into a sinkhole, and he finds himself trapped. Chaos...

It's been six months since Sarah's mom died. Three months since her dad fell apart. Sarah has left her fine arts boarding school to take care of her dad and her little brother, and now she's trying to hold everything together at home while adjusting to...

The letters went out in mid-February. Each letter invited its recipient to spend a week at Camp So-and-So, a lakeside retreat for girls nestled high in the Starveling Mountains. Each letter came with a glossy brochure with photographs of young women...

Who were the jujitsuffragettes? In the early twentieth century, women in England demanded the right to vote--and faced violent retaliation. Rather than back down, the suffragist group Women's Social and Political Union formed its own security unit...

Young adults need eight to ten hours of sleep each night, yet nearly half fail to get the sleep they need, and nearly a third have fallen asleep in school due to insufficient sleep. So many Americans--both teens and adults--lack quality sleep that the...

Three teens struggle to carve out futures for themselves under a totalitarian regime. Czechoslovakia, 1969 Seventeen-year-old Pavol has watched his country's freedoms disappear in the wake of the Soviet Union's invasion. He's seen his own dreams...

Empower teens to take charge of their digital lives.Without avoiding the dark side of technology, this interactive and comprehensive reference book empowers teens to take charge of their digital life and improve their mental health and well-being...

Book Two in the Internationally Bestselling Mirror Visitor QuartetWINNER of the 2021 Prix Albertine Jeunesse In book two of the bestselling Mirror Visitor Quartet, "the plots multiply, the world of the Arks gains depth, details abound, and the story...

Containing 97 percent of Earth's water supply, the ocean plays a huge role in regulating global temperatures, supporting plant and animal life, and contributing to the livelihoods of millions of people. But in spite of all this, the ocean remains...

In early 2018, teen-led March for Our lives events across the United States protested gun violence, demanded change to save lives, and registered voters toward that end. This authoritative exploration of guns, gun violence, and gun control explores the...