A supervolcanic eruption in Yellowstone Park destroys crops and livestock, clogs machinery, and makes cities uninhabitable. Those who survive find themselves caught in an apocalyptic catastrophe in which humanity has no choice but to rise from the ashes and recreate the world.

Planet Earth is perfect. Everything about our world - its size, its distance from the Sun, its spin and tilt, its moon - is perfectly suited to our existence, and our planet's natural forces perfectly nurture life. A global weather system circulates and distributes fresh water to all corners of the globe, marine currents deliver nutrients to even the deepest reaches of the ocean, sunlight warms and energizes everything it touches, and powerful volcanoes...

"There is a volcano in the new Dinosaur Park. Some engines think it will erupt! What will Thomas do?"--Page 4 of cover.

Ranger, the time-traveling golden retriever, has landed in Viking age Iceland, where he meets a girl named Helga, who seems perfectly able to take care of herself--until an erupting volcano and an early arriving baby forces Ranger and Helga to journey through the ash and smoke to find her father and bring him home.

Traces a year of dramatic global change in the aftermath of a massive early nineteenth-century Indonesian volcanic eruption that disrupted weather patterns and triggered food shortages, religious revivals, migrations, and a typhus epidemic.

Abandoned on a mysterious island, you must use logic and observation, solve puzzles and find allies along the way to escape before the grumbling volcano erupts.

In the shadow of Vesuvius, a lesser-known volcano rumbles: Campi Flegrei. An eruption could endanger the millions of residents of the city of Naples. Scientists gain new insights into what happened in nearby Pompeii, and dig into the unique geology of Campi Flegrei. Can an innovative eruption warning system prevent Naples becoming the next Pompeii?

Considérée dans son ensemble, la France présente un caractère de symétrie depuis longtemps remarqué. Son contour ne s'éloigne pas beaucoup de celui d'un hexagone régulier et, de ses six ctés, trois sont des frontières maritimes, pendant que deux autres, les Pyrénées et les Alpes sont montagneuses. Seule, sa frontière du Nord-Est, de Belfort à Dunkerque, est ouverte. Ces circonstances tiennent à ce que, malgré la très grande diversité...