A primary school teacher from Belfast holds the Guinness World Record for the loudest human voice, reaching 121.7 decibels. The loudest sound on earth was an exploding Saturn V rocket at 204 decibels, while the Krakatoa volcanic explosion in 1883 was the loudest accurately measured human sound. There are a number of deafening sounds on […]
The longest tapeworm found in a human was 82 feet long and caused by consuming raw or undercooked meat. Tapeworms can live in their host for over 25 years and can cause digestive problems or bacterial infections. 20 million people worldwide are infected with tapeworms. The longest tapeworm ever found inside a human was one […]
The study of the human body varies depending on the objective. Scientists use books and observation, while artists focus on form and structure. Technology has improved with 3D models and simulations. Medical students use corpses for a better understanding of biological systems, while artists study proportions for realistic renderings. The methods used for a study […]
The timing of the first human migrations depends on the definition of “human”. Homo habilis evolved in Africa 2.4 million years ago, followed by Homo ergaster, which may have been the first to leave Africa. The Sahara Pump Theory explains the spread of Homo from Africa. Homo erectus lived in China and Southeast Asia at […]
Human language is a means of communication between people, which can be naturally evolved or intentionally constructed. Animals and machines also have languages, but human language is unique in its arbitrary connection between sounds and ideas. It has many forms and social elements, and its evolution and origin are still debated. A human language is […]
Human factors engineers enhance and improve products to make them safe, comfortable, and efficient. They identify needs, test existing products, develop improvement strategies, and create new designs. A bachelor’s degree in engineering or a related field is typically required. A career as a human factors engineer is usually suitable for a person with a creative […]
Human factors specialists, trained in engineering and psychology, analyze human behavior in various settings such as court cases, insurance operations, and industrial design. They hold doctorates and have extensive backgrounds in sciences and are often called upon to testify in court cases. They can also conduct research and provide additional help beyond consultations. When human […]
Human capital investment leads to human development, improving experience, knowledge, health, and morale. It allows individuals to create a better life, increase earning potential, and contribute to society. Highly skilled individuals can develop vaccines and cures, and instilling good morals reduces criminal tendencies. The relationship between human capital and human development is the fact that […]
Parasites in humans cause health problems and can enter the body through food or water. Symptoms include fatigue, irregular bowel movements, weight loss, itching, and anemia. Preventative measures include sanitary food preparation and deworming pets. Seek medical attention if symptoms occur. The presence of parasites in humans causes numerous health problems, some of which are […]
Human death is a process caused by cerebral hypoxia, or oxygen deprivation to brain cells. The brain requires 25% of the body’s blood supply to function, and diseases that impair blood’s ability to deliver oxygen can lead to death. Even sudden trauma ultimately causes cerebral hypoxia. Contrary to popular belief, human death is more of […]
Measuring human capital involves quantifiable factors such as revenue, hiring, salaries, training costs, and HR department costs. However, an average revenue per full-time employee calculation can be misleading due to external factors beyond employee control. Companies also consider absenteeism rates, turnover, and HR department efficiency to measure human capital. Human capital can be difficult to […]
