"In the 1990s, scientists lived inside Biosphere 2 (Biosphere 1 is the Earth itself) for two years, trying to figure out if colonizing Mars would ever be possible. Now scientists don't live there but instead conduct all sorts of studies and experiments aimed to help us better understand our environment and especially understand what sort of things are happening to it due to climate change and other man-made problems. It's a unique take on the Scientists...

Long before its establishment as a national park in 1872, Yellowstone was home to the gray wolf, as well as other large predators. But the relationship between human and wolf has always been a tense and complicated one. Predator control programs were developed and, by the mid-1900s, wolves had almost been entirely eliminated from the region and even the lower United States. The removal of even one strand of an ecosystem's complex web can have a ripple...

"Is each snowflake unique? What comes first: thunder or lightning? What causes the seasons? Whatever the weather question a child has--from sunshine to storms or snow--the fascinating answers are right here!"--

Weather affects everyone all over the world. What makes a desert hot and dry while a rain forest is hot and wet? What is global climate change? How do scientists crack the meteorological code and forecast weather?

"Could a snowball fight really have sparked the American Revolution? What made people get so steaming mad over the price of tea? And did it take a minuteman only a minute to join the fight? Step back into colonial America to find out about taxation without representation; why the British were called lobsters, the first-ever combat submarine and whether Yankee doodles were really dandy!"--

There are few kids who don't enjoy home video games, but do they know who invented the first one? Readers learn about Ralph Baer's life and the first home video games ever made. Readers will invent their own game, too.

In July of 2015 a robotic spacecraft reached Pluto after a nine-and-half-year journey. New Horizons is the first spacecraft mission to Pluto and revealed its five moons as never before seen. Images from the mission show a reddish surface covered in ice-water mountains, moving glaciers, and hints of possible ice volcanoes and an underground ocean. Pluto is geologically alive and changing! This addition to the Scientists in the Field series goes where...

Everything in our solar system orbits the Sun. It is the center of our solar system, and affects everything in it. Robotic explorers have taught us a lot about the star at the center of our solar system. Readers will learn about the amazing missions, the dedicated scientists who plan them, and more far-out facts about the Sun.

Cratered Mercury is the smallest and fastest planet in the solar system. Temperatures there vary more than on any other planet. Readers will learn lots of far-out facts about the closest planet to the Sun. This book features a center spread with fast facts, perfect for report writing.

Saturn, the jewel of the solar system, has seven mysterious and beautiful rings. These rings, made of ice, dust, and rock, range in size from a snow crystals to a house. Readers will learn about the amazing spacecraft missions to Saturn, the dedicated scientists who plan them, and more far-out facts about the sixth planet from the sun.