Science Then and Now by Thomas L. Krannawitter, Ph.D. When it aligns with a certain political agenda, we are instructed to “follow the science.” But what is science? How does modern science differ from the classical version? Which is better? Read on Substack
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When snow falls, the properties of water perform a delicate dance. Snowflakes fall like dominoes fall. A piece of dust forms a crystal, and the appearance of that crystal attracts more crystals until they form long dendrites around the speck of dust like ants around a piece of chocolate. As long as the growing snowflake remains lighter than air, it will float. But as soon as one extra crystal crosses the tipping point, the structure will succumb to gravity and fall. Snow tends to fall in places where other snow has already fallen. And even though every snowflake is different, they’re not as unique as we’ve been told. They start as spheres and form tendrils to diffuse heat. Cold temperatures produce flakes that look like bullets or needles. Extra‐cold weather is when you find the classic shape of a six‐sided prism, or the fern‐like crystal with six radiating branches. It was probably this form of fern‐like snow that fell one day, fifteen thousand years ago, on the frozen ice sheets of Greenland. The landmass was already covered in ice two miles thick. With time, the fresh flakes descended into the ice, hidden from daylight, and compressed by pressure to a third of their original size. Fitting with geology, thousands of years passed and little happened. Snow that started as flakes was transformed to dense glacial ice as it moved quickly, about four miles per year, toward the west coast of Greenland. Ice weakens as it nears the coast, because every day, particularly in the summer, enormous walls of ice flake off the glacier and fall into the ocean. This is how ocean icebergs form. But it was one particular iceberg that fell in the summer of 1909 that would drift toward infamy. Around too briefly to have a name, this iceberg was more than two miles wide and one hundred feet tall at its birth, big enough to dwarf the Colosseum in Rome and all the pyramids put together, at least before it started melting. It would tower over the largest steamship ever conceived, which was also formed in that summer of 1909. That steamship, the Titanic, was conceived with a competitive ambition for size and opulence. It would be the largest and most luxurious passenger liner ever to float. Built over three years, it was a triplet, designed by the White Star Line with two sister ships, the Olympic (1911) and the slightly larger Britannic (1915). They were designed to ferry the rich, famous and well-connected across the Atlantic in ornate cabins with elegant Victorian amenities. The highest price ticket on the Titanic, just north of $60,000 in today’s dollars, granted a passenger access to an elite dining room, oak-paneled meeting rooms, a Turkish bath, a salt-water swimming pool, enormous bay windows and a roving orchestra. At the time, humans knew little about the behavior of icebergs, except that most melted somewhere in the Arctic Circle. John Thomas Towson, a scientist devoted to ship navigation who wrote a book called Practical Information on the Deviation of the Compass, observed in 1857 that icebergs were no different—and no softer—than rocks formed over millennia by time and pressure. Towson knew that icebergs posed an existential danger to the wooden hulls of nineteenth‐century ships. Steel hulls were invincible, he said, but that was based on assumption, not experience. Such an extreme number of icebergs traveled south through the east strait of the Grand Banks in eastern Newfoundland that in 1912 the U.S. Coast Guard nicknamed the area “iceberg alley.” For three years the icy mass bobbed and weaved in Arctic waters. At one point, it traveled north and spent the summer of 1910 farther toward the north pole. Then it caught the Labrador current, which carries freezing water south. Most icebergs melt within their first year. A few last two. Only a handful last three because, eventually, the Labrador current meets the warm waters of the Gulf Stream, which acts as an oceanic microwave. Only 1 percent of northern hemisphere icebergs survive this desert zone, and finally, only one in several thousand would make it to 41 degrees north, the same latitude as New York City and directly in the path of transatlantic ships. When the Titanic sank in 1912, it plunged an astounding two and a half miles and hit the seafloor at more than thirty miles per hour. The ship’s ocean grave was so remote that its location remained a mystery until 1985, when a team that had the benefit of government‐developed submarines and deep‐water crafts was able to take some blurry snapshots. It took seventy‐three years, almost an entire human lifespan, to find the most illustrious and fascinating shipwreck of all time. This course of events has become so widely known—told endlessly in films, books, museum exhibits, consumer products and looping TV specials—that it’s easy to forget the most astounding detail: how close it came to not happening. Icebergs had struck ships as long as there had been ships to strike, but the one that felled the largest passenger liner ever built was nearly gone. After three years adrift, the icy mass likely had one week to live, two at most. It was getting smaller while wading into warmer water. As icebergs melt from the bottom. They grow top‐heavy and flip, followed by more erosion and more flipping, until eventually, when they’ve been reduced to the size of a basketball, they’re constantly flipping until nothing is left. By some estimates, more icebergs float around today than in the Titanic’s era, largely the result of warmer water that causes more frequent glacier calving. Advances in radar, GPS and aircraft monitoring, along with bigger and better-engineered ships, have reduced the danger of icebergs to ships. But icebergs still remain a threat. In 2007, a small cruise ship near Antarctica called the MS Explorer was hit by an unseen iceberg. After the chunk gashed the starboard side, passengers rushed to lifeboats and were rescued several hours later by another nearby cruise ship. But no iceberg will ever be as famous as the one. Any other week and a ship nobody believed could sink would complete its maiden voyage and turn around for its ho‐hum second one. Any other day and the iceberg would’ve been a fraction of its dangerous size. Any other hour and it would’ve been hundreds of feet away. But the ship waited for nothing, and the ice knew nothing to wait for, and the ingenuity of humans at the dawn of modern invention succumbed, rather incredibly, to the force of several crushed‐up snowflakes as hard as rock. Smithsonian 8/16/2022 Daniel Stone From SINKABLE by Daniel Stone, published by Dutton, an imprint of Penguin Publishing Group, a division of Penguin Random House, LLC. Copyright © 2022 by Daniel Stone. Titanic Iceberg – Information About the Iceberg that Sank the Titanic Photo: Qurna is in present-day Iraq, whose cultural history is among the most ancient on Earth. Here: The Lion of Babylon from a portion of the Ishtar Gate, a prominent symbol of Iraqi culture. The Qurnah Disaster: Archaeology & Piracy in Mesopotamia Top Image: Battle of Ashkelon between the Crusaders and the Saracens.
Bottom Image: the resort city of Ashkelon today An attack on Ashkelon eight centuries ago created a rampart against the city walls; it was abandoned, and prevented the desert from taking over the town, permitting the Ashkelon we stand in today. Crusader-era Siege Ramp Protected Israeli City From the Desert for a Thousand Years Col. Wesley Fox is a Medal of Honor recipient who wrote two widely respected accounts of his wartime experiences in the Marine Corps. His books, Marine Rifleman: Forty-Three Years in the Corps and Courage and Fear: A Primer, are both considered classic war memoirs. Drawing on over four decades of leadership experience, both during two wars and peacetime, Fox insists that a good leader must focus on building an organization based on the bonds of comradeship. Successful leaders are those who are actively concerned with the health, happiness, and daily lives of those who follow them. He contends that those who have such leaders will be better prepared to cope with any challenge because they are part of a group built on loyalty and trust. Fox defines the six essential elements of successful leadership as care, personality, knowledge, motivation, commitment, and communication. He presents a chapter on each element, recounts how his views of leadership were forged, and offers impressive examples of leadership displayed by his fellow Marines. While drawn directly from his military experience, Fox contends that these six elements apply to all who want to pursue effective leadership. His book is certain to inspire and motivate both civilians and members of the military. Photo: The key concept of the space elevator appeared in 1895 when the brilliant Russian scientist Konstantin Eduardovich Tsiolkovsky was inspired by the Eiffel Tower in Paris. He considered a similar tower that reached all the way into space and was built from the ground up to the altitude of 35,786 kilometers, the height of geostationary orbit.[8] He noted that the top of such a tower would be circling Earth as in a geostationary orbit. Objects would acquire horizontal velocity due to the Earth's rotation as they rode up the tower, and an object released at the tower's top would have enough horizontal velocity to remain there in geostationary orbit. Tsiolkovsky's conceptual tower was a compression structure, while modern concepts call for a tensile structure (or "tether"). Photo: Underground habitation in Cappadocia, Turkey. Room for a full city of over 10,000 people to live; cut from volcanic rock. In its 4.5 billion–year history, life on Earth has been almost erased at least half a dozen times: shattered by asteroid impacts, entombed in ice, smothered by methane, and torn apart by unfathomably powerful megavolcanoes. And we know that another global disaster is eventually headed our way. Can we survive it? How? As a species, Homo sapiens is at a crossroads. Study of our planet’s turbulent past suggests that we are overdue for a catastrophic disaster, whether caused by nature or by human interference. It’s a frightening prospect, as each of the Earth’s past major disasters—from meteor strikes to bombardment by cosmic radiation—resulted in a mass extinction, where more than 75 percent of the planet’s species died out. But in Scatter, Adapt, and Remember, Annalee Newitz, science journalist and editor of the science Web site io9.com explains that although global disaster is all but inevitable, our chances of long-term species survival are better than ever. Life on Earth has come close to annihilation—humans have, more than once, narrowly avoided extinction justduring the last million years—but every single time a few creatures survived, evolving to adapt to the harshest of conditions. This brilliantly speculative work of popular science focuses on humanity’s long history of dodging the bullet, as well as on new threats that we may face in years to come. Most important, it explores how scientific breakthroughs today will help us avoid disasters tomorrow. From simulating tsunamis to studying central Turkey’s ancient underground cities; from cultivating cyanobacteria for “living cities” to designing space elevators to make space colonies cost-effective; from using math to stop pandemics to studying the remarkable survival strategies of gray whales, scientists and researchers the world over are discovering the keys to long-term resilience and learning how humans can choose life over death. Newitz’s remarkable and fascinating journey through the science of mass extinctions is a powerful argument about human ingenuity and our ability to change. In a world populated by doomsday preppers and media commentators obsessively forecasting our demise, Scatter, Adapt, and Remember is a compelling voice of hope. It leads us away from apocalyptic thinking into a future where we live to build a better world—on this planet and perhaps on others. Readers of this book will be equipped scientifically, intellectually, and emotionally to face whatever the future holds. Konstantin Tsiolkovsky- wikipediaCappadocia-wikipedia The Last Viking unravels the life of the man who stands head and shoulders above all those who raced to map the last corners of the world. In 1900, the four great geographical mysteries--the Northwest Passage, the Northeast Passage, the South Pole, and the North Pole--remained blank spots on the globe. Within twenty years Roald Amundsen would claim all four prizes. Renowned for his determination and technical skills, both feared and beloved by his men, Amundsen is a legend of the heroic age of exploration, which shortly thereafter would be tamed by technology, commerce, and publicity. Revered in his lifetime as an international celebrity, pursued by women and creditors, he died in the Arctic on a rescue mission for an inept rival explorer.
Stephen R. Bown has unearthed archival material to give Amundsen's life the grim immediacy of Apsley Cherry-Garrard's The Worst Journey in the World, the exciting detail of The Endurance, and the suspense of a Jon Krakauer tale. The Last Viking is both a thrilling literary biography and a cracking good story. Below you’ll find a selection of the best Roald Amundsen quotes:
Amundsen- Princeton Library
Benghazi, Libya. 9/11/2012. Just over a year after the fall of Gaddafi, and on the eleventh anniversary of the 9/11 attacks, a group of heavily armed Islamic terrorists had their sights set on the U.S. diplomatic and intelligence presence in the city.
In the prolonged attack, four Americans died, including the American ambassador to Libya, Christopher Stevens, the Information Officer Sean Smith, and two former Navy SEALs, Tyrone Woods and Glen Doherty, working for the Central Intelligence Agency. Based on confidential eyewitness sources within the intelligence, diplomatic, and military communities, Under Fire is the terrifying account of that night, and of a desperate last stand amid the chaos of rebellion.
Donald Maclean was one of the most treacherous spies of the Cold War era, a member of the infamous “Cambridge Five” spy ring, yet the extent of this shrewd, secretive man’s betrayal has never fully been explored. Drawing on formerly classified files, A Spy Named Orphan documents the extraordinary story of a model diplomat leading a chilling double-life until his exposure and defection to the USSR.
Philipps describes a man prone to alcoholic rages, who rose through the ranks of the British Foreign Office while secretly transmitting through his Soviet handlers reams of diplomatic and military intelligence on the atom bomb and the shape of the postwar world. A mesmerizing tale of blind faith and fierce loyalty alongside dangerous duplicity and human vulnerability, Philipps’s narrative will stand as the definitive account of the man codenamed “Orphan.” |
The Road Not Taken
by Robert Frost Archives
May 2024
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