WEBLet’s look at the length of time that each of the major periods of human history has lasted. The Paleolithic era, when humans hunted and gathered, started with the beginning of our species. It lasted from about 250,000 years ago to about 10,000 years ago. That’s about 240,000 years, or 240 millennia. The
WEB8 9 A photograph of Io, one of Jupiter’s moons Finding perfection in change Galileo’s view of the Copernican model was both simple and profound.
WEBA BRIEF HISTORY OF TAXONOMY Taxonomy is the science of naming and classifying different life forms. Oral traditions of taxonomy predate writing and were first used when human ancestors described different food sources, predators, and medicinal or poisonous plants. The advent of writing enabled more detailed, recorded taxonomies. 3000 BCE
WEBOver the 2017/18 school year, the Big History Project (BHP) conducted studies to measure student learning and student and teacher perceptions of the BHP course. We conduct these studies annually in
WEBBy Big History Project, adapted by Newsela Leonardo da Vinci (1452 — 1519) was a talented Italian scholar. He was a painter, architect, mathematician, inventor, engineer, and more. The Codex Leicester is a 72-page scientific journal handwritten by da Vinci. The Codex is named for the Earl of Leicester, who bought it in 1717.
WEBFranklin had a family history of cancer, but her exposure to X-rays may have contributed to her death. Even if she had lived, she may not have shared in the prize.
WEB8 9 Darwin wrote well and his books sold well. His total earnings on sales came close to $500,000 in modern terms, an impressive sum for science books.
WEBHave you noticed that the Big History course uses big questions to begin your study? Before investigating a question, scholars make a thoughtful guess about what they’ll learn. We call these thoughtful guesses “conjectures” or “hypotheses.” Scholars need to gather information to answer their ques-tions.
WEB1902–1921 Paid work at Harvard College Observatory; gradually loses her hearing 1902–1908 Discovers 2400 Cepheid variable stars and develops her period-luminosity theory
WEBthe Big Bang theory. First he demonstrated that the Universe was much larger than previously thought, then he proved that the Universe is expanding.