Most species don't even need to provide any parental care for their newborn pups, which can swim and feed right away. Researchers are only now beginning to comprehend how being caught—even unintentionally—can result in premature births in ray species. According to research in the journal Biological Conservation, after being captured, roughly 85% of blue stingrays lost their young. 
 

The early toothbrushes were little more than "chew sticks," which were tiny frayed twigs used to scrape plaque and food residue off and between teeth. Twisting and rubbing these sticks against their teeth was a slight improvement over the traditional way of rubbing and cleaning the teeth with plants, feathers, or anything else. To refresh the breath, certain chew sticks were constructed from aromatic wood. Chew sticks have been found as far back as Babylon, Egypt, and China.

While the core games' stories span around 821 years, from the first Assassin's Creed in 1191 to around 2012 and Desmond Miles' modern-day plot, Ubisoft has constructed a large, Star Wars Expanded Universe-style backstory loaded with mythology and intertwined with historical events. According to the publisher, the first known assassin was Xerxes, who assassinated King Darius of Persia, according to the ancient Greek historian Herodotus, indicating that the custom dates back millennia.

Another impact of spirituality is that it can help you live a healthier life. When you have a solid connection to your spiritual side, it gives you solace during tough times. It can help you make better decisions about your health and individual well-being, both physically and emotionally, and is a positive factor for mental health.

In the world's oceans, lakes, and freshwater rivers, stingrays are thought to exist in roughly 220 different species. One of the ocean's rarest species, the small eye stingray has a wingspan of nearly 7 feet, white markings, and tiny eyes (hence the nickname). 7 Only a few sightings were reported before the early 2000s, but this is gradually changing; in the previous 15 years, researchers have counted 70 sightings off the southern Mozambique coast.

The medical term for this condition, melaena, is caused by a slow, steady trickle that travels through the bowels and causes feces to seem very dark, even black. Vomiting can result from mild, unexpected bleeding, and the coffee-colored discharge is brought on by the stomach acids breaking down the blood. Hematemesis, a sign of heavy abrupt bleeding, is characterized by feeling incredibly dizzy and vomiting blood.

The oldest known event that is still held is Chhath Puja. Because it is a festival of the sun deity, Chhath puja is extremely important at the sunrise and sunset hours. According to the devotee, dawn and sunset are the most important times of the day when a body may safely receive beneficial solar energy without damage. On the scientific side, solar energy has a very low quantity of dangerous UV radiations throughout this time period, making it safe for human bodies.

According to The Guinness Book of World Records, the largest soufflé was found in the Palestinian town of Nablus. It weighed 3,891 pounds, was 243 feet long, and was consumed in just ten minutes.

French (20.4%), German (64%), Italian (6.5%), and Romansh (just over 1%) are their four national languages. As a foreign tourist or resident, you may feel at ease since it's totally normal to not comprehend what someone says to you because the Swiss don't understand the Swiss anyhow.

We have always heard that life is only possible on the planet Earth. But of all the planets in our solar system except Earth, Mars is most likely to hospitable to life on earth. In the year 1986, NASA found something that they thought to be the fossils of microscopic living things in a rock recovered from Mars.

During the medieval period, Khajuraho had 85 temples, of which only 22 Hindu temples remain, the rest having been destroyed by natural disasters.

Until Shah Jahan lifted the restriction, it was only permitted in royal gardens for the longest period of time, according to food historian KT Achaya's book "A Historical Dictionary of Indian Food." Mango varieties like Tota Puri, Rataul, and the always-delicious Kesar were produced by the earliest instances of mango grafting during the Mughal era. 8. Emperor Jehangir is said to have loved mangoes and once quipped that no other fruit in Kabul could compare to the flavour of his cherished mangoes.

We may not anticipate it, but what we wear directly impacts why mosquitoes won't leave us alone. These little insects are drawn to dark colors because, according to this study, black attracts more mosquitos than white. According to the same study, these flying insects are drawn to heat, which dark colors absorb more than bright hues.

Purely carnivorous, stingrays feed on creatures that reside on or beneath the beach. According to a study that looked at the reconstruction of southern stingrays' diets around the Caribbean, stingrays mostly ate worms, fish with ray fins, and crustaceans. According to additional studies, the species ingested up to 30 different types of prey per day 
 

The cornea is one of only two organs in the human body that lacks blood vessels. The cornea is the transparent portion of the eye that protects the pupil and other parts of the eye. According to scientists at the Harvard Department of Ophthalmology's Schepens Eye Research Institute, cartilage and the cornea are the only types of tissue in the human body that lack blood vessels. Your eye also has some unusual characteristics that you probably aren't aware of.

Going through a list of America's most notorious serial killers, two signs stand out above all the rest: Pisces and Gemini. Pisces are known for being loners, and Geminis are known for their charm—two characteristics commonly found in serial murderers.

The level of cholesterol is assessed in relation to liver health. Higher levels of harmful LDL cholesterol and triglycerides will occur if the liver is fatty or slow. We can argue that cholesterol is produced by the liver, which then turns that cholesterol into specific hormones and new cells.

Brakes that do not lock up under full pedal pressure are becoming commonplace. They've saved numerous lives by letting the driver to keep steering the car and, hopefully, avoid a collision while braking hard. Mercedes-Benz improved the technology with Bosch in the 1970s before incorporating it into the S-Class in 1978. Anti-lock brakes were soon made standard on all Mercedes-Benz models.

Speaking of how varying quantities of vitamin D are needed by different types of women, older women (and males) probably need more vitamin D. The NIH recommends 800 IU per day for both men and women over 70, as was previously noted.

The same is true for knitting. Your overall health is improved by needlecrafts because they significantly lower your stress and blood pressure. They maintain your flexibility and improve the blood flow to your hands. The simultaneous stimulation of both hemispheres of your brain by using both hands in various ways gives your brain a workout that not many other activities can. You can learn more about this topic here and here.

Pigeons have been kept as pets for a very long time. Pigeons are seen in Mesopotamian art dating back to 4500 BCE! Scientists believe these works of art are the first photos of birds ever recorded. Pigeons have also been a key food source for thousands of years. These findings have led to the hypothesis that pigeons were the first birds mankind domesticated.

Flounders are saltwater fish that live along the beach, along the Eastern Seaboard, and in estuaries, streams, and rivers. They move to the ocean over the winter and don't usually return to shallow waters until April.

During Japanese rule it became the wealthy, modernized country it is today. There are plenty of places you can visit Japanese hill towns, tea houses, and hot springs used by the colonial rulers. While these places are quaint and charming, historians tell us that the Japanese were cruel rulers and forced local women to be their concubines.