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Hace 3 días · Mammals are the best model organisms for humans. Livestock is modified with the intention of improving economically important traits such as growth rate, quality of meat, milk composition, disease resistance, and survival. Genetically modified fish are used for scientific research, as pets, and as a food source.
Hace 3 días · Gottfried Wilhelm Leibniz [a] (1 July 1646 [ O.S. 21 June] – 14 November 1716) was a German polymath active as a mathematician, philosopher, scientist and diplomat who invented calculus in addition to many other branches of mathematics and statistics.
Hace 4 días · The history of Europe is traditionally divided into four time periods: prehistoric Europe (prior to about 800 BC), classical antiquity (800 BC to AD 500), the Middle Ages (AD 500–1500), and the modern era (since AD 1500). The first early European modern humans appear in the fossil record about 48,000 years ago, during the Paleolithic era.
Hace 4 días · In the period AD 500–800, Scandinavian societies began adopting cultural elements from the newly established Germanic kingdoms in Europe, transitioning further into petty kingdoms. Archaeological evidence suggests that were numerous petty kingdoms throughout modern-day Sweden.
Hace 3 días · Ancient Greece refers to a period of Greek history that lasted from the Greek Dark Ages (c. 1050 – c. 750 BC) to the end of antiquity (c. 600 AD). In common usage, it can refer to all Greek history before—or including—the Roman Empire , but historians tend use the term more precisely.
Hace 1 día · He founded the Mathematical School at Christ's Hospital in 1673 and, two years later, following concerns over French advances in astronomy, he founded the Royal Observatory at Greenwich. He maintained an interest in chemistry and regularly visited his private laboratory.
Hace 3 días · 1957 was a common year starting on Tuesday of the Gregorian calendar, the 1957th year of the Common Era (CE) and Anno Domini (AD) designations, the 957th year of the 2nd millennium, the 57th year of the 20th century, and the 8th year of the 1950s decade.
