Carl Zimmer investigates one of the biggest questions of all: What is life? The answer seems obvious until you try to seriously answer it. Is the apple sitting on your kitchen counter alive, or is only the apple tree it came from deserving of the word? If we can’t answer that question here on Earth, how will we know when and if we discover alien life on other worlds? The question hangs over some of society’s most charged conflicts - whether a fertilized egg is a living person, for example, and when we ought to declare a person legally dead.

It was a time of revolution. The Roman Revolution describes the little known "crisis of the third century", and how it led to a revolutionary new Roman Empire. Long before the more famous collapse of the Western Roman Empire in the fifth century, in the years between AD 235-275, barbarian invasions, civil war, and plague devastated ancient Rome.

In Alexander the Great, Anthony Everitt judges Alexander’s life against the criteria of his own age and considers all his contradictions. We meet the Macedonian prince who was naturally inquisitive and fascinated by science and exploration, as well as the man who enjoyed the arts and used Homer’s great epic, the Iliad, as a bible. As his empire grew, Alexander exhibited respect for the traditions of his new subjects and careful judgment in administering rule over his vast territory. But his career also had a dark side.

Why was gin and tonic the cocktail of choice for British colonists in India and Africa? What does Starbucks have to thank for its global domination? What has protected the lives of popes for millennia? Why did Scotland surrender its sovereignty to England? What was George Washington's secret weapon during the American Revolution? The answer to all these questions, and many more, is the mosquito. Driven by surprising insights and fast-paced storytelling, The Mosquito is the extraordinary untold story of the mosquito’s reign through human history.

A sharp and illuminating history of one of capitalism's longest-running tensions - the conflicts of interest among public-company directors, managers, and shareholders - told through entertaining case studies and original letters from some of our most legendary and controversial investors and activists.

Over the few short decades that followed Christopher Columbus' first landing in the Caribbean in 1492, Spain conquered the two most powerful civilizations of the Americas: the Aztecs of Mexico and the Incas of Peru. Hernán Cortés, Francisco Pizarro, and the other explorers and soldiers who took part in these expeditions dedicated their lives to seeking political and religious glory, helping to build an empire unlike any the world had ever seen. But centuries later, these conquistadors have become the stuff of nightmares.

Over billions of years, ancient fish evolved to walk on land, reptiles transformed into birds that fly, and apelike primates evolved into humans that walk on two legs, talk, and write. For more than a century, paleontologists have traveled the globe to find fossils that show how such changes have happened.

Called “the best of science writing” (Edward O. Wilson) and named a best book by Popular Science, a dive into the secret lives of whales, from their four-legged past to their perilous present. Whales are among the largest, most intelligent, deepest diving species to have ever lived on our planet. They evolved from land-roaming, dog-size creatures into animals that move like fish, breathe like us, can grow to 300,000 pounds, live 200 years, and travel entire ocean basins. Whales fill us with terror, awe, and affection - yet there is still so much we don't know about them.

As Mark Mazower shows us in his enthralling and definitive new account, myths about the Greek War of Independence outpaced the facts from the very beginning, and for good reason. This was an unlikely cause, against long odds, a disorganized collection of Greek patriots up against what was still one of the most storied empires in the world, the Ottomans. The revolutionaries needed all the help they could get.

Until the End of Time is Brian Greene's breathtaking new exploration of the cosmos and our quest to find meaning in the face of this vast expanse. Greene takes us on a journey from the big bang to the end of time, exploring how lasting structures formed, how life and mind emerged, and how we grapple with our existence through narrative, myth, religion, creative expression, science, the quest for truth, and a deep longing for the eternal.

Two months after D-Day, the Allies found themselves in a stalemate in Normandy, having suffered enormous casualties attempting to push through hedgerow country. Troops were spent, and American tankers, lacking the tactics and leadership to deal with the terrain, were losing their spirit. General George Patton and the other top US commanders needed an officer who knew how to break the impasse and roll over the Germans - they needed one man with the grit and the vision to take the war all the way to the Rhine. Patton and his peers selected Maurice Rose.

The year is 1919. The horror of the First World War is fresh for the protagonists of Time of the Magicians, each of whom finds himself at a crucial juncture. Benjamin is trying to flee his overbearing father and floundering in his academic career, living hand to mouth as a critic. Wittgenstein, by contrast, has dramatically decided to divest himself of the monumental fortune he stands to inherit, in search of spiritual clarity.

Insects might make us recoil in repugnance, but they also manufacture - or make possible in other ways - many of the things we take for granted in our daily lives. When we bite into a shiny apple, listen to the resonant notes of a violin, try on the latest fashions, receive a dental implant, or get a manicure, we are mingling with the by-products of their everyday lives.

Mars was once similar to Earth, but today there are no rivers, no lakes, no oceans. Coated in red dust, the terrain is bewilderingly empty. And yet multiple spacecraft are circling Mars, on the brink, perhaps, of a staggering find, one that would inspire humankind as much as any discovery in the history of modern science. In this beautifully observed, deeply personal book, Georgetown scientist Sarah Stewart Johnson tells the story of how she and other researchers have scoured Mars for signs of life, transforming the planet from a distant point of light into a world of its own.

The intellectual adventure story of the "double-slit" experiment, showing how a sunbeam split into two paths first challenged our understanding of light and then the nature of reality itself - and continues to almost 200 years later. Through Two Doors at Once celebrates the elegant simplicity of an iconic experiment and its profound reach. With his extraordinarily gifted eloquence, Anil Ananthaswamy travels around the world, through history and down to the smallest scales of physical reality we have yet fathomed. It is the most fantastic voyage you can take.