Galen, who lived nearly five centuries later impressively described scoliosis, lordosis and kyphosis, provided aetiologic implications and used the same principles with Hippocrates for their management, while his studies influenced medical practice on spinal deformities for more than 1500 years. Where does curvature of the spine come from? Types ofRead More →
The earliest writing we know of dates back to around 3,000 B.C.E. and was probably invented by the Sumerians, living in major cities with centralized economies in what is now southern Iraq. When was cuneiform introduced? The earliest writing we know of dates back to around 3,000 B.C.E. and wasRead More →
40,000 years ago: Mungo Man and Mungo Lady death. 3,300 years ago: Narrabeen Man death. Why is the Narrabeen Man important? “The Narrabeen man provides early archaeological evidence for ritual or payback killing by spearing. The timing of this event is significant for understanding other archaeological indicators of increased socialRead More →
Walther Flemming: pioneer of mitosis research. When was meiosis and mitosis discovered? 1879: Mitosis observed. Walter Flemming described chromosome behavior during animal cell division. Who coined the term meiosis and mitosis? The terms Mitosis and Meiosis are coined by Fleming and Farmer and Moore, respectively. Mitosis was first observed inRead More →
(The Methuselah star has an anemic 1/250th as much of the heavy element content of our sun and other stars in our solar neighborhood.) The star, which is at the very first stages of expanding into a red giant, can be seen with binoculars as a 7th-magnitude object in theRead More →
Acetylsalicylic acid is one of the most widely used drugs in the world. Its ancestry the salicylates, including salicin and salicylic acid, are found in the bark and leaves of the willow and poplar trees. How long has aspirin been around for? The aspirin we know came into being inRead More →
Definition: A computer virus is a malicious software program loaded onto a user’s computer without the user’s knowledge and performs malicious actions. Description: The term ‘computer virus’ was first formally defined by Fred Cohen in 1983. What are computer virus names? A Guide to Computer Virus Names Morris Worm. LetRead More →
They are tools of more settled societies with some agriculture. The term ‘Mesolithic’ was introduced by Hodder Westrop in 1877, though the idea had been used earlier. It was not much used until V. Gordon Childe popularized it in his book The dawn of Europe (1947). When did Mesolithic AgeRead More →
African Trypanosomiasis, also known as “sleeping sickness”, is caused by microscopic parasites of the species Trypanosoma brucei. It is transmitted by the tsetse fly (Glossina species), which is found only in sub-Saharan Africa. What do tsetse flies transmit? Sleeping sickness is caused by parasites transmitted by infected tsetse flies andRead More →
Adenosine 5′-triphosphate, or ATP, is the principal molecule for storing and transferring energy in cells. It is often referred to as the energy currency of the cell and can be compared to storing money in a bank. How adenosine triphosphate is formed? It is the creation of ATP from ADPRead More →