He came up with the concept for the little telescope in 1816. Actually, the telescope he had used to view the sky gave him the idea.

If you've ever considered memorizing all of the different species of butterflies, it might take a little longer than you expected. Those species that are usually found in the lower 48 states of the United States would be a good place to start. Still, that figure is close to 575, so we recommend making note cards or focusing on the butterflies you see in and around your yard this spring and summer.

According to research at Harvard, anxiety has been indicated in several chronic physical illnesses, including heart disease, chronic respiratory disorders like COPD, gastrointestinal conditions such as IBS, and substance abuse. There is still a lot to learn about the way our body experiences anxiety and how it affects our physical health. However, what is certain is that long-term exposure to increased cortisol levels (i.e., anxiety) leads to decreased immunity and damage to the heart and lungs.

It's easy to dismiss Einstein's ideas of relativity as entirely theoretical, yet they have real-world implications. The theory of general relativity, for example, asserts that gravity influences time: time flows quicker for things in space than for those on Earth. And this has far-reaching ramifications for many space-based systems, including GPS accuracy. His theories are also fundamental to nuclear technology and explain how electromagnets function.

The first tightrope walk occurred in 1859, when Charles Blondin wore pink tights and walked a one-inch-thick tightrope over a part of Niagara Falls. Blondin returned to Niagara Falls numerous times more, including one excursion while blindfolded. In 2012, Nik Wallenda became the first person to walk across the Niagara Falls on a tightrope. Wallenda walked in front of tens of thousands of people and had his journey broadcast live on television.

Tropical America is the Mimosa Pudica's original habitat. These days, it can be found on islands in the Pacific as well as in various areas of Asian countries.

Every oyster is born male, and they all undergo at least one gender change. Oysters can fertilise their own eggs since they have both sets of reproductive organs at birth.

Chile has one of the world's longest coastlines, stretching for around 6500 kilometres. It is, nevertheless, one of the world's narrowest, having a width of little over 200 kilometres. The majority of the most well-known beach resorts, or balnearios, are located in central Chile, ranging from El Norte Chico south past the metropolitan district to the northern limits of Region VII, Region del Maule. Chile has a moderate Mediterranean climate, with warm to hot days and cold nights in the summer.

The Vatican is the world's smallest nation, with an area of only 0.44 square kilometres and a population of only 825 people. It is most likely the only country in the world where you can walk around in less one hour. What makes it even more intriguing is that it is located within the city of Rome.

Several studies on insomnia have indicated that persistent cigarette smokers have greater incidences of insomnia symptoms such as sleep deprivation, longer sleep latency, increased rapid eye movement, sleep density, and more bouts of obstructive sleep apnea.

Formality, courtesy, and social standing are all important. To show respect to the person you're speaking with, special nouns and verb ends are employed. This is also one of the reasons why skilled Korean translators are required by overseas firms. In this language, nuance is really crucial.

Ernest Wever and Charles Bray of Princeton University removed a cat's skull and much of its brain to attach the animal to electricity. The sound of them speaking into the cat's ear could be heard via a phone receiver in another room. The bizarre experiment opened the path for advancements in cochlear implants.

Dog owners in Turin, Italy will be fined up to €500 if they don’t walk their pets at least three times a day, under a new law from the city’s council. Italy considers itself an animal-loving nation and in many cities, stray cats are protected by law.

To enforce the law, Turin police would rely largely on the help of tipsters spotting cruel treatment by neighbors. Turin has the most stringent animal protection rules in the country. They even ban fairgrounds from giving away goldfish in bags.

River runoff from many regions of the world, including the Ganges and Brahmaputra, two of the world's biggest rivers, flows into this ocean. Because of its proximity to the equator, the evaporation rate is still rather significant.

The fundamental technology behind windmills was undoubtedly derived from the wind sails that were used to steer ships. However, the first instance of wind energy being used to help automate routine manual tasks, such as pumping water or grinding grain, was most likely in Persia. Last but not least, the first vertical axis windmill design that has been historically recorded is the Persian panemone windmill, with records of the technology dating back as far as 1,500 years. The vertical sail on this particular specimen was made of bundles of reeds or wood, which were then fastened to the central vertical shaft with the aid of horizontal struts.

13 frames per second is the minimum speed required by the human brain to process consecutive images as movement. Anything less, and the human brain will treat each frame as a separate image. Because 16 FPS is so close to 13, old movies appear choppy and unnatural.

Bhutan's monarchy has always strictly limited outside influences in order to protect the nation's uniqueness from the crowning of the first king in 1907. Because of its small size and fragile situation, the country considers maintaining sovereignty essential. Bhutan first opened its doors to foreign tourists in 1974, the year it was recognized as a country by the United Nations.

In reality, some women may require more or less of the vitamin S. Particularly pregnant women might profit from taking a supplement.

Switzerland's lakes are the greatest for swimming, and there are plenty to pick from. Lake Geneva is Switzerland's biggest lake, with 580.03 km2 (224 sq mi). It is shared with France (40.47% of which is on French territory) and is known as Lac Léman. Lake Neuchâtel, with a surface area of 218.3 km2, is the biggest lake entirely within Switzerland (84 sq mi). The majority of freshwater is so clear that rivers and lakes can be drunk from. A lake is considered dirty only if you can't see the bottom of it.

Fairtrade coffee is more expensive, but it goes a long way toward improving farmer conditions, and farmers spend at least 25% of the Fairtrade Premium on productivity and quality improvements. Fairtrade coffee products have received numerous Great Taste Awards in recent years.

Majuli is recognized as the largest river island in the world. It is located on the Brahmaputra river near Jorhat and encapsulates a lush green and pollution-free environment. Majuli attracts a lot of tourists every year because of its scenic beauty, its vibrant culture, and friendly people.

It's interesting how they classify game violence — World War II brutality is mild enough to be labelled T, yet modern-day nukes are clearly rated M.

Prior to the 1990s, it was widely assumed that significant human construction did not occur until early man dealt with agriculture and began to establish towns. When archaeologists discovered Göbekli Tepe in southern Turkey, this notion was thrown out the window because the remains, which included the world's oldest megaliths, were created roughly 2,000 years before the agricultural revolution.