The Islamic Golden Age was a period of cultural and intellectual growth between the 8th and 13th centuries, with some scholars saying it continued into the 16th century. Arab scholars translated ancient works into their native languages, established academic institutions, and made fundamental discoveries in various fields. The era is difficult to summarize, but it […]
The Islamic Golden Age was a period of cultural and intellectual growth between the 8th and 13th centuries, continuing into the 16th century. The Abbasid Caliphate moved their capital to Baghdad and established academic institutions, including a House of Wisdom where ancient works were translated and preserved. Papermaking and pen use were introduced, and universities, […]
The median age of first-time mothers in the US has increased from 22.7 in 1980 to 25.4 in recent years, possibly due to pursuing higher education. One in five mothers has their first child after 35, and Utah has the highest birth rate while Vermont has the lowest. The number of single mothers has also […]
The Stone Age lasted from 2.6 million years ago until about 3500 BC and is divided into three segments: Paleolithic, Mesolithic, and Neolithic. At least nine species of the Homo genus participated in the Stone Age, living in small tribes leading a hunter-gatherer lifestyle until the Neolithic Revolution took place. Common wares included hand axes, […]
The Bronze Age was a period of prehistoric societies where metallurgy advanced to produce bronze, but not yet iron. It lasted from 3500 BC to 1200 BC and allowed for the creation of more durable tools and artifacts. The birthplace of metallurgy is Anatolia, Turkey. The Bronze Age refers to a time period in prehistoric […]
The Age of Jackson (1829-1849) was a time of sweeping government changes and reforms in the US, led by President Andrew Jackson. This era saw the rise of career politicians and the “booty system,” as well as the Indian Removal Act, the opening of the US border, and the growth of democratic government and two-party […]
The Heroic Age of Antarctic exploration saw numerous expeditions to explore the continent, with many failing in the harsh environment. Famous explorers include Amundsen, Mawson, Scott, and Shackleton. The era ended in 1917 due to World War I. The extensive documentation of the period is unique, with surviving photographs, diaries, and journals. The Heroic Age […]
The Age of Sail, from the late 15th to mid 19th centuries, saw the dominance of sailing vessels in trade and military. It led to the slave trade and piracy, but also promoted global community and trade. The era ended with the invention of steamships and diesel-powered ships. Tall ships are now used for recreation. […]
The Gilded Age was a short period in American history after the Civil War, characterized by a population and economic boom that created an incredibly wealthy upper class. The era lasted from 1877 to 1893, ending with the market crash of 1893. The success of western expansion, the California Gold Rush, and improved technology in […]
The Age of Discovery, from the 15th to 17th century, was a period of exploration and trade expansion. Scientific and technical advances led to better ships and navigation, and motivations included economic, political, and religious reasons. Many European nations explored the Orient, built trade relations, and formed colonies around the world. The Age of Discovery, […]
New Age spirituality encompasses various belief systems, with no specific sacred text or exclusive practices. It often incorporates ancient religious practices and unconventional healing methods, and emphasizes the mixing of science and spirituality. Common beliefs include reincarnation, karma, and pantheism. New Age spirituality is an umbrella term that covers several belief systems. There are a […]
Swimming is divided by age group to create fair competition and ensure age-appropriate training. Different expectations for behavior and skills are also set. This style of swimming provides a foundation for lifelong swimming and other careers. Swimming by age group is swimming that is divided by age group. There are a number of reasons for […]
Mental age is a psychological age determined by intelligence or personality tests. It is debatable, but can be useful for older people who feel restricted by their physical age. Mental age can also be used to determine IQ. Some people may be older or younger than they appear. In some cases, these judgments may be […]
Advanced maternal age refers to women having their first child at an older age, typically 35 or older. This trend is due to factors such as education and career opportunities. However, advanced maternal age poses health risks such as difficulty getting pregnant, higher risk of birth defects, miscarriage, gestational diabetes, stillbirth, premature birth, and high […]
BMI-for-age adjusts the standard BMI calculation for age-related changes in body composition. It is important to use when assessing children’s health, and can also be useful for adults as their bodies change with age. The BMI-for-age percentile system compares a child’s BMI to others in their age group to determine if they are overweight, underweight, […]
Female hormones change throughout life, causing symptoms such as hot flashes and infertility. Hormone replacement therapy can alleviate these symptoms, and synthetic hormones can prevent pregnancy. Hormones affect infants and puberty, and pregnancy hormones increase blood supply and relax uterine muscles. Menopause causes bone and heart problems, headaches, fatigue, and low libido. Levels of female […]
The age of enlistment for military service varies by country, with some having mandatory enlistment at a certain age. The United States requires individuals to be 18, but allows early enlistment with parental consent. Some countries have programs that allow for early enlistment or enrollment in military colleges. The draft age can change during wartime […]
The oldest known rocks on Earth are 4.03 billion years old from the Acasta Gneiss in Canada. Other old rocks have been found in Greenland and Australia. Zircons from the Jack Hills in Australia are the oldest rocks at 4.4 billion years old and suggest the oceans may be older than previously thought. Only 7% […]
Ice ages occur when ice sheets cover at least the polar areas of the Earth, with cycles of glacials and interglacials lasting 40,000 and 100,000 years. The last glacial period began around 70,000 BC and ended between 15,000 and 10,000 BC. Scientists are uncertain about the causes of ice ages, but variables include atmospheric composition, […]
Menopause is the end of a woman’s childbearing years, occurring between the ages of 45 and 55, with the average age being 51. Genetics, lifestyle, and overall health can determine the actual age of menopause. Symptoms include irregular periods, hot flashes, and mood swings, and can be relieved with herbal remedies or hormone replacement therapy. […]
