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The humble banana almost seems like a miracle of nature. Colourful, nutritious, and much cherished by children, monkeys and clowns, it has a favoured position in the planet’s fruitbowls. The banana is vitally important in many regions of the tropics, where different parts of the plant are used for clothing, paper and tableware, and where the fruit itself is an essential dietary staple. People across the globe appreciate the soft, nourishing flesh, the snack-sized portions, and the easy-peel covering that conveniently changes colour to indicate ripeness. Individual fruit—or fingers—sit comfortably in the human hand, readily detached from their close-packed companions. Indeed, the banana appears almost purpose-designed for efficient human consumption and distribution. It is difficult to conceive of a more fortuitous fruit.

The banana, however, is a freakish and fragile genetic mutant; one that has survived through the centuries due to the sustained application of selective breeding by diligent humans. Indeed, the “miraculous” banana is far from being a no-strings-attached gift from nature. Its cheerful appearance hides a fatal flaw— one that threatens its proud place in the grocery basket. The banana’s problem can be summed up in a single word: sex.

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Marvin Heemeyer of Granby, Colorado was a profoundly frustrated muffler repair man. In the late 1990s–after years of protests, petitions, and town meetings–it became obvious to the 52-year-old that he was entwined in a gross miscarriage of justice. His business was ruined by some shady zoning changes, and Heemeyer contended that mayor and city council were corrupt. Even as he was forced to give up his legal fight and sell his land, he hatched one last plan to secretly retool his muffler shop to serve a single malevolent purpose: to construct a machine that would allow him to exact his revenge upon those who had wronged him.

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The crew of the HMS Challenger, 1874On 21 December 1872, the British naval corvette HMS Challenger sailed from Portsmouth, England on an historic endeavor. Although the sophisticated steam-assisted sailing vessel had been originally constructed as a combat ship, her instruments of war had been recently removed to make room for laboratories, dredging equipment, and measuring apparatuses. She and her crew of 243 sailors and scientists set out on a long, meandering circumnavigation of the globe with orders to catalog the ocean’s depth, temperature, salinity, currents, and biology at hundreds of sites–an oceanographic effort far more ambitious than any undertaken before it.

For three and a half long, dreary years the crew spent day after day dredging, measuring, and probing the oceans. Although the data they collected was scientifically indispensable, men were driven to madness by the tedium, and some sixty souls ultimately opted to jump ship rather than take yet another depth measurement or temperature reading. One day in 1875, however, as the crew were “sounding” an area near the Mariana Islands in the western Pacific, the sea swallowed an astonishing 4,575 fathoms (about five miles) of measuring line before the sounding weight reached the floor of the ocean. The bedraggled researchers had discovered an undersea valley which would come to be known as the Challenger Deep. Reaching 6.78 miles at its lowest point, it is now known to be the deepest location on the whole of the Earth. The region is of such immense depth that if Mount Everest were to be set on the sea floor at that location, the mighty mountain’s peak would still be under more than a mile of water.

Nothing was known of what organisms and formations might lurk at such depths. Many scientists of the day were convinced that such crevasses must be lifeless places considering the immense pressure, relative cold, total lack of sunlight, and presumed absence of oxygen. It would be almost a century before a handful of inventors and explorers finally resolved to go down there and take a look for themselves.

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In late 1945, along the banks of the Techa River in the Soviet Union, a dozen labor camps sent 70,000 inmates to begin construction of a secret city. Mere months earlier the United States’ Little Boy and Fat Man bombs had flattened Hiroshima and Nagasaki, leaving Soviet leaders salivating over the massive power of the atom. In a rush to close the gap in weapons technology, the USSR commissioned a sprawling plutonium-production complex in the southern Ural mountains. The clandestine military-industrial community was to be operated by Russia’s Mayak Chemical Combine, and it would come to be known as Chelyabinsk-40.

Within a few years the newfangled nuclear reactors were pumping out plutonium to fuel the Soviet Union’s first atomic weapons. Chelyabinsk-40 was absent from all official maps, and it would be over forty years before the Soviet government would even acknowledge its existence. Nevertheless, the small city became an insidious influence in the Soviet Union, ultimately creating a corona of nuclear contamination dwarfing the devastation of the Chernobyl disaster.

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In the early decades of the twentieth century the discipline of psychology was still in its infancy, but beginning to make significant headway. Pioneering researchers were enthusiastically unraveling the human mind, and some were willing to go to alarming lengths to satisfy their curiosity.

One such trailblazer was a behaviorist named John B. Watson. In 1919, his curiosity was aroused after observing a child who showed an irrational fear of dogs. Watson supposed that a shiny new human would not possess an inborn fear of domesticated animals, but if “one animal succeeds in arousing fear, any moving furry animal thereafter may arouse it.” In order to satiate his scientific appetite, he undertook a series of experiments at Johns Hopkins University to determine whether an infant could indeed be conditioned to fear cute-and-cuddly animals by associating them with scary stimuli. A couple decades earlier Pavlov’s notorious dogs had been conditioned to salivate at the sound of a bell; Watson hoped to expand upon the concept.

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