10 most difficult cu­riosi­ties riddles

"Women and children first" is a code of conduct dating from 1852, whereby the lives of women and children were to be saved first in a life-threatening situation. HMS Birkenhead was wrecked on 26 February 1852, while transporting troops to Algoa Bay at Danger Point. There were not enough serviceable lifeboats for all the passengers, and the soldiers famously stood firm on board, thereby allowing the women and children to board the boats safely and escape the sinking.Only 193 of the estimated 643 people on board survived; including all women and children

Argentina maintains the most permanent polar stations - 6, Chile - 5, Russia - 5.

The gut–brain axis is the biochemical signaling that takes place between the gastrointestinal tract and the central nervous system. Changes in the composition of the gut flora due to diet, drugs, or disease correlate with changes in levels of circulating cytokines, some of which can affect brain function. The gut flora also release molecules that can directly activate the vagus nerve. Around 70% of people with autism also have gastrointestinal problems, indicating that there may be a connection between autism and gut flora.

Minnesota is a state in the midwestern and northern regions of the United States. Minnesota was admitted as the 32nd U.S. state on May 11, 1858, created from the eastern half of the Minnesota Territory. The state has a large number of lakes, and is known by the slogan "Land of 10,000 Lakes".

The Paris Codex is devoted almost entirely to Mayan ritual and ceremony and is one of three surviving generally accepted pre-Columbian Maya books dating to the Period of Mesoamerican chronology (c. 900–1521 AD). The codex largely relates to a cycle of thirteen 20-year k'atuns and includes details of Maya astronomical signs.

The green tint found in most tempered glass is a result of iron used in the production of glass sheets, where it is added as an ingredient to act as a lubricant. In fact, except in manufacturing processes designed to minimize iron use to avoid the green tint, you’ll find that green cast in all sheets of glass–not just tempered glass

It is not possible to get a single point in American Football. In beach volleyball and table tennis, the sets are finished when 21 (volleyball) and 11 (table tennis) points are reached.

Moissanite is regarded as a diamond alternative, with some optical properties exceeding those of diamond. Its lower price and less exploitative mining practices necessary to obtain it make it a popular alternative to diamonds. Due in part to the similar thermal conductivity of moissanite and diamond, it is a popular target for scams; however, higher electrical conductivity and birefringence of moissanite may alert a buyer to fraud.

Pollada is a traditional food from Peru, and makes up one of the most well-known plates in Peruvian cuisine. It is a special food because it is prepared in exchange of receiving a profit to help a particular need. ... In Peru, pollada is made with music, dancing, and is bought by the famous pollada cards. It is believed that the first form of preparation of pollada was in the economic inflation periods of Peru, which forced Peruvians to live with overpriced foods.

Sir Roderick David Stewart, is a British rock singer and songwriter is one of the best-selling music artists of all time, having sold over 100 million records worldwide. On 31 December 1994, Stewart played in front of 3.5 million people on Copacabana beach in Rio, and made it into the Guinness Book of World Records for staging the largest free rock concert attendance in history.