Systems Science

Icy, rocky, sometimes dusty, always mysterious – comets and asteroids are among the Solar System's very oldest inhabitants, formed within a swirling cloud of gas and dust in the area of space that eventually hosted the Sun and its planets. Locked within each of these extra-terrestrial objects is the 4.6-billion-year wisdom of Solar System events, and by studying them at close quarters using spacecraft we can coerce them into revealing their closely-guarded secrets. This offers us the chance to answer some fundamental questions about our planet and its inhabitants.

Soil covers most of the land on Earth. It feeds plants and is home to many animals. Discover why soil is an important part of nature!

Most of Earth is covered in water. Water falls from the sky as rain or snow. All living things need water to survive. Discover why water is an important part of nature!

With inspiring stories from the ranks of both the famous and the unheralded, seasoned with wit, and even an occasional tone of sarcasm, chapter after chapter grabs the attention, energizes the intellect, fortifies the will, enlivens the confidence, and elevates the listener’s personal vision, ultimately leading them to a profound conviction of the transforming power of thinking about one’s thinking.

Laterre is on the brink of war. The Third Estate are rioting against the injustices of a corrupt system. The Patriarche, reeling from the murder of his only heir, makes brutal attempts to quash the unrest, while a new militant faction launches a series of deadly attacks. And three outlaws find themselves pulled into the fray. Marcellus is now a traitor to his planet, willing to do anything to stop his grandfather from seizing control of Laterre. Chatine is a prisoner on Bastille. Alouette is a fugitive who has been lied to her entire life. These three renegades must risk everything.

Past and present collide and the fate of the universe hangs in the balance when, at long last, one story intertwines both crews of the Enterprise! Kirk and his crew must rescue a scientist before his evil captor can use him to conquer the galaxy, while 99 years away, Picard's crew is headed for a black hole that holds the key to the future of the Federation!

Erosion changes Earth's natural features. It breaks down materials and can help make something new. Discover why erosion is an important part of nature!

All living things need air to survive. Air also protects Earth. Discover why air is an important part of nature!

Plants and animals from millions of years ago left behind fossils. Fossils can teach people about the past. They are also used for fuel. Discover why fossils are an important part of nature!

I, Q is a wild and witty voyage through the secret soul of creation as only the enigmatic Q can tell it! Co-written and read by John de Lancie, who portrayed Q on television for more than a decade!

China's strategic capabilities and doctrine have historically differed from the United States' and Russia's. China has continued to modernize and expand its arsenal despite its policy of no first use, while the United States and Russia have decreased deployed weapons stocks. This volume brings together an international group of distinguished scholars to provide a fresh assessment of China's strategic military capabilities, doctrines, and political perceptions in light of rapidly advancing technologies.

Melvin is lost when Kalli returns to Gaia. After pushing his friends away, he turns to his newfound skills as a healer for some much-needed solace. Paired with an unlikely partner in crime, Melvin must once again rise to the occasion when an ominous message comes from another world. Kalli is dying.

Harness the power of vagus nerve (VN) function and heart rate variability (HRV) in the long-awaited follow-up to bestseller Activate Your Vagus Nerve by Dr. Navaz Habib. This book goes beyond activation alone to explore stressors, measurement techniques, and practical protocols to create a roadmap to a healthier, happier life.

"Resistance is futile." The greatest threat the Federation has ever faced is the half organic, half mechanical Borg. Now more dangerous than ever, the Borg threatens the Federation's past, present, and future. Read by Gates McFadden, "Beverly Crusher" on Star Trek, The Next Generation!

The second brightest object in the sky, after the moon is Venus. It's also the only planet named after a woman. Learn more about bright, beautiful Venus, named for the Roman goddess of love and beauty.

The only planet to support life, Earth has a lot going for it. Think you know everything there is to know about our home planet? Think again. Discover more about the blue planet we call home.

The smallest planet in our solar system is also the closest to the sun. That means on Mercury, one year is just 88 days long! Discover more facts about the small but mighty Mercury.

Mars is famous for its coloring, but the fourth planet from the sun has more than that going for it. Discover more interesting facts and secrets about the famous "red planet."

Uranus is the seventh planet from the sun and has a special feature, it tilts! Discover the mysteries of this ice giant that sits half in darkness for more than 40 years at a time!

Everything about Jupiter is big! Its size is big. Even its storms are big! Get the big and small facts about this gas giant that can be seen glowing in the night sky.