Long trackways, stone rows, circles, standing stones, and huge earthworks may be found all over Britain, monuments dating back well over 4000 years. The authors have made a remarkable breakthrough in understanding the system by which prehistoric monuments were designed and placed.

Describes the early 18th-century expedition of scientists sent by France and Spain to colonial Peru to measure the degree of equatorial latitude, which could resolve the debate between whether the earth was spherical or flattened at the poles.

How do you measure the size of the planet you're standing on? "Circumference" is the story of what happened when one man asked himself that very question. Nicholas Nicastro brings to life one of history's greatest experiments when an ancient Greek named Eratosthenes first accurately determined the distance around the spherical earth. In this fascinating narrative history, Nicastro takes a look at a deceptively simple but stunning achievement made by one man, millennia ago, with only the simplest of materials at his disposal. How was he able to measure the land at a time when distance was more a matter of a shrug and a guess at the time spent on a donkey's back? How could he be so confident in the assumptions that underlay his calculations: that the earth was round and the sun so far away that its rays struck the ground in parallel lines? Was it luck or pure scientific genius? Nicastro brings readers on a trip into a long-vanished world that prefigured modernity in many ways, where neither Eratosthenes' reputation, nor the validity of his method, nor his leadership of the Great Library of Alexandria were enough to convince all his contemporaries about the dimensions of the earth. Eratosthenes' results were debated for centuries until he was ultimately vindicated almost 2000 years later, during the great voyages of exploration. "Circumference" is a compelling scientific detective story that transports readers back to a time when humans had no idea how big their world was--and the fate of a man who dared to measure the incomprehensible.

This book presents a plausible account of how thousands of tons of unusually pure copper ore from Isle Royale in northern Michigan's Lake Superior was mined and shipped to Europe by the Minoans 4500 years ago during the Bronze Age, and how Stonehenge in England was used as an aid to Minoan celestial navigation back and forth across the Atlantic Ocean. The author proposes that Minoan ocean navigators used stone circles, particularly Stonehenge, to advance the science of celestial astronomy of Bronze Age navigation and trade.

Appalling secrets lie beneath the civility of a small town. Two boys joined in an unlikely alliance confront a world of body snatching, terror, and murder.Nathan Pickerel's hilarious difficulties adjusting to a new school lessen after Floyd Singletary, a gifted outcast, befriends him. The two boys hear tales from an old widow that set them on an exploration of Nathan's new home - an ancient two-story house full of secrets. In an attempt to find money hidden in the house they soon turn up a mummified corpse in a retaining wall in the basement and expose themselves to sinister forces that have remained out of sight since the 1930s.In a showdown between the boys and a sadistic family of grave robbers who feel they have a right to the missing money, Nathan is kidnapped and faced with torture. Floyd, unable to enlist the help of the police because of his reputation as living in a fantasy world, saves Nathan through cunning and bravery. But Floyd is later convicted of murder. Only Floyd's brilliance and Nathan's loyalty eventually save him.

Find out about the ways scientists measure how water, wind, earthquakes, and glaciers change our Earth.

This is a modern-spelling edition of John Greaves’s Pyramidographia (1646), together with some miscellaneous travel-writings, letters and a biography of Greaves by Thomas Birch. It includes a full scholarly introduction and detailed notes. This book is the first of its kind in English, and undertakes a scientific evaluation of the pyramids through metrics, using state-of-the-art instruments and drawing on both ancient and modern authorities, amongst which is included Arab and Persian writers as well as Western sources. Greaves’s work is distinguished from others by his refusal to be drawn into mystical or theological speculation, and is an excellent example of how seventeenth-century scientists may be said to have pioneered modern methods of scientific inquiry. Greaves discusses the age of the pyramids, their purpose, the nature of their builders and the methods he believes were used to erect them. It may be said that he is probably the earliest genuine English “Egyptologist”, and that Pyramidographia is indeed the earliest scientific treatise on the subject. Greaves’s travel-writings, which also contain a great deal of measurement, show readers how he approached his sojourn in foreign lands, and his letters give some measure of the man and his relationships with fellow-scientists and patrons. The biography by Thomas Birch further fills out Greaves’s life and career.