This book can be cut, drawn in, folded into shapes and will even take you to the fourth dimension. So join stand-up mathematician Matt Parker on a journey through narcissistic numbers, optimal dating algorithms, at least two different kinds of infinity and more.

    Few people knew their secrets, carefully guarding the valuable knowledge, and strict laws regulated their production and use. The Rarest Blue tells the incredible story of tekhelet, the elusive sky-blue color mentioned throughout the Bible. Minoans discovered it; Phoenicians stole it; Roman emperors revered it; and Jews—obeying a commandment to affix a thread of it to their garments—risked their lives for it. But as the Roman Empire dissolved, the color vanished. Then, in the nineteenth century, a marine biologist marveled as yellow snail guts smeared on a fisherman’s shirt turned blue. But what had caused this incredible transformation? Meanwhile, a Hasidic master obsessed with the ancient technique posited that the source of the dye was no snail but a squid. Bitter controversy divided European Jews until a brilliant rabbi proved one side wrong. But had an unscrupulous chemist deceived them? In this richly illustrated book, Baruch Sterman brilliantly recounts the amazing story of this sacred dye that changed the color of history.

    As Joel Reynolds launches a legal fight to expose and challenge the Navy program, marine biologist Ken Balcomb witnesses a mysterious mass stranding of whales near his research station in the Bahamas. Investigating this calamity, Balcomb is forced to choose between his conscience and an oath of secrecy he swore to the Navy in his youth.When Balcomb and Reynolds team up to expose the truth behind an epidemic of mass strandings, the stage is set for an epic battle that pits admirals against activists, rogue submarines against weaponized dolphins, and national security against the need to safeguard the ocean environment. Waged in secret military labs and the nation’s highest court, War of the Whales is a real-life thriller that combines the best of legal drama, natural history, and military intrigue.

    In Dark Banquet, zoologist Bill Schutt takes readers on an entertaining voyage into the world of some of nature’s strangest creatures—the sanguivores. Using a sharp eye and mordant wit, Schutt makes a remarkably persuasive case that vampire bats, leeches, ticks, bed bugs, and other vampires are as deserving of our curiosity as warmer and fuzzier species are—and that many of them are even ­worthy of conservation.Schutt takes us from rural Trinidad to the jungles of Brazil to learn about some of the most reviled, misunderstood, and marvelously evolved animals on our planet: vampire bats. Only recently has fact begun to disentangle itself from fiction concerning these remarkable animals, and Schutt delves into the myths and misconceptions surrounding them. Examining the substance that sustains nature’s vampires, Schutt reveals just how little we actually knew about blood until well into the twentieth century. We revisit George Washington on his deathbed to learn how ideas about blood and the supposedly therapeutic value of bloodletting, first devised by the ancient Egyptians and Greeks, survived into relatively modern times. Schutt also tracks the history of medicinal leech use. Once employed by the tens of millions to drain perceived excesses of blood, today the market for these ancient creatures is booming once again—but for very different reasons.Among the other blood feeders we meet in these pages are bed bugs, or “ninja insects,” which are making a creepy resurgence in posh hotels and well-kept homes near you. In addition, Dark Banquet details our dangerous and sometimes deadly encounters with ticks, chiggers, and mites (the ­latter implicated in Colony Collapse Disorder—currently devastating honey bees worldwide). Then there are the truly weird—vampire finches. And if you thought piranha were scary, some people believe that the candiru (or willy fish) is the best reason to avoid swimming in the Amazon.Enlightening, alarming, and appealing to our delight in the bizarre, Dark Banquet peers into a part of the natural world to which we are, through our blood, inextricably linked.From the Hardcover edition.

    The tiger isn’t just killing people, it’s annihilating them, and a team of men and their dogs must hunt it on foot through the forest in the brutal cold. As the trackers sift through the gruesome remains of the victims, they discover that these attacks aren’t random: the tiger is apparently engaged in a vendetta. Injured, starving, and extremely dangerous, the tiger must be found before it strikes again.As he re-creates these extraordinary events, John Vaillant gives us an unforgettable portrait of this spectacularly beautiful and mysterious region. We meet the native tribes who for centuries have worshipped and lived alongside tigers, even sharing their kills with them. We witness the arrival of Russian settlers in the nineteenth and early twentieth centuries, soldiers and hunters who greatly diminished the tiger populations. And we come to know their descendants, who, crushed by poverty, have turned to poaching and further upset the natural balance of the region.This ancient, tenuous relationship between man and predator is at the very heart of this remarkable book. Throughout we encounter surprising theories of how humans and tigers may have evolved to coexist, how we may have developed as scavengers rather than hunters, and how early Homo sapiens may have fit seamlessly into the tiger’s ecosystem. Above all, we come to understand the endangered Siberian tiger, a highly intelligent super-predator that can grow to ten feet long, weigh more than six hundred pounds, and range daily over vast territories of forest and mountain.Beautifully written and deeply informative, The Tiger circles around three main characters: Vladimir Markov, a poacher killed by the tiger; Yuri Trush, the lead tracker; and the tiger himself. It is an absolutely gripping tale of man and nature that leads inexorably to a final showdown in a clearing deep in the taiga.