Systems Science

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!

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!

The muscular system is made up of three different kinds of muscles: skeletal muscles, smooth muscle, and heart muscle. But what does each kind of muscle do? And where in the body are they located? Explore the muscular system in this engaging and informative audiobook.

After years of ill health, capitalism is now in a critical condition. Growth has given way to stagnation; inequality is leading to instability; and confidence in the money economy has all but evaporated. In How Will Capitalism End?, the acclaimed analyst of contemporary politics and economics Wolfgang Streeck argues the world is about to change.

The human body is full of many wonders, some of which we have yet to explore! There's so much to discover, especially for young scientists! Jump-start your child's learning of biology with this program. In this book, kids will take a journey with Dr. Discovery Jones on an exciting and educational journey throughout the human body looking at the cells, the tissues, and the organs! Filled with fun facts, this book will fill young and curious minds with a great foundational knowledge of how the human body works.

After my last fight with Darius Windstorm, the Refuge has struck. With the Blobber world consumed by war, I know there’s only one place my team and I can find safety, and we start a frantic quest to find the runaway warriors in the deepest recesses of the dungeons. Even with a few new friends, the overbearing System won’t stay down for long. A reckoning is coming, and my status as a warlord means I’ll be at the forefront of any new strike against their world.

Permaculture, a Portmanteau of "permanent" and "agriculture" is growing in popularity around the world and for a good reason too. First introduced to protect nature and humankind, permaculture is both a philosophy and a practical approach to sustainable development.

There is an unaddressed Black mental health crisis in our world today. In The Unapologetic Guide to Black Mental Health, psychologist Reeda Walker offers a comprehensive guide to help African Americans combat stigma, increase awareness around mental illness, practice emotional wellness, and get the best care possible for Black people in an unequal system.

In the distant future, horrible dreams torment Admiral James T. Kirk, dreams prompted by his reading of Strangers from the Sky, a book about that historic first contact. He dreams of an alternate reality where he somehow changed the course of history, and destroyed the Federation before it began.

Jewels of Gwahlur by Robert E. Howard is a Conan the Barbarian adventure steeped in sword and sorcery. Set in the kingdom of Keshan, Conan embarks on a perilous quest to claim the legendary treasure known as the Teeth of Gwahlur. Facing treacherous priests, false oracles, and ancient supernatural forces, Conan must navigate deadly intrigues and uncover the secrets of the haunted city of Alkmeenon. Brimming with action, dark magic, and Howard’s vivid world-building, this classic tale captures the clash between barbarism and civilization in a suspenseful saga of treasure, betrayal, and survival.

Musicians have often wanted to change the world, and many channel that desire through the political power of music. Music has a unique ability to unsettle the most fundamental political and social conventions - or, alternatively, to stabilize the status-quo. Sound System is the story of one musician’s journey to discover what exactly makes music so powerful. Years of touring, protesting, and performing have given Dave Randall an insider’s view of the music industry, enabling him to shed light on the most tightly held secrets of celebrity, commodification, and culture.

Knells plans have begun to come together. His crew grows larger and more powerful with every passing day, and rumors of Captain Sorfina's death have already started to spread but not all attention is beneficial. A group who have lurked in the shadows for centuries are moving once more, and their leaders motives are just as shrouded as their past. More pieces enter the board of looming war, and Knells crew finds itself at the center of everything, whether they want to be or not.

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.

Solar Power for Beginners uses stepwise instructions, tons of real-life examples, and various schematics that make your solar learning life easier. DIY Source authors have consulted with numerous mobile solar power DIYers, electrical and photovoltaics engineers, and off grid solar professionals to prepare a solar guide to power your adventures.

As Reeves shows, the growing separation between the upper middle class and everyone else can be seen in family structure, neighborhoods, attitudes, and lifestyle. Those at the top of the income ladder are becoming more effective at passing on their status to their children, reducing overall social mobility. The result is not just an economic divide but a fracturing of American society along class lines. Upper-middle-class children become upper-middle-class adults.

A mad scientist. A murdered James Kirk. A universe collapsing onto itself! Featuring a dramatic reading by Leonard Nimoy and George Takei, and enhanced with sound effects and an original score!

From each according to ability, to each according to U-credit! The slogan of Sparta! 'United points', the currency created by the guileful System. Lord Leo is building an inimitable just government, the only one around. Other Lords look upon him with anger and greed. They aren't just looking, either: blades and spears sharpen behind his back, desperate to bring a stop to the glorious rampage of the Spartans across the new world.

We can encounter chaos in every system around us - even the smallest and simplest ones. Any system can fall into chaos, which prevents us to accurately predict its behavior. Even a small change in the initial conditions can lead to unexpectedly large-scale consequences. Therefore, we can often enter in panic, blame actors for events they are not responsible for, and our sense of security in the world can generally decrease.

From the best-selling author of A Vast Conspiracy and The Run of His Life comes Too Close to Call - the definitive story of the Bush-Gore presidential recount. A political and legal analyst of unparalleled journalistic skill, Jeffrey Toobin is the ideal writer to distill the events of the 36 anxiety-filled days that culminated in one of the most stunning Supreme Court decisions in history.