Risultati di ricerca
2 giorni fa · By the early 1860s, as summarized in Charles Lyell's 1863 book Geological Evidences of the Antiquity of Man, it had become widely accepted that humans had existed during a prehistoric period—which stretched many thousands of years before the start of written history.
10 mag 2024 · The three ages of the ancient world — Stone, Bronze, and Iron — encompass the formative years of human history in most regions. Learn how we went from dwelling in caves to building civilizations over millions of years. By Jack Knudson. May 10, 2024 6:00 AM.
27 apr 2024 · Lead-uranium dating of zircon crystals in this formation has revealed that some of the rocks formed some 3.7 billion years ago. Nichols and her team studied the iron in these ancient rocks to determine the properties of Earth's magnetic field at the time.
24 apr 2024 · Geologists uncovered ancient rocks in Greenland that bear the oldest remnants of Earth’s early magnetic field. The results potentially extend the age of the Earth’s magnetic field by hundreds of millions of years, and may shed light on the planet’s early conditions that helped life take hold.
6 mag 2024 · Discover notable new fiction and nonfiction. Each of these discoveries helped answer a historical question—How did humans become human?—while deepening a metaphysical one: What makes humans human?...
2 giorni fa · The Anthropocene ( / ˈænθrəpəˌsiːn, ænˈθrɒpə -/ [1] [2] [3]) is the common name for a proposed geological epoch, dating from the commencement of significant human impact on Earth up to the present day. It affects Earth's geology, landscape, limnology, ecosystems and climate. [4] [5] The effects of human activities on Earth can be ...
5 giorni fa · Archaeological evidence indicates that the transition from food-collecting cultures to food-producing ones gradually occurred across Asia and Europe from a starting point in the Fertile Crescent.
