Does owls have eyeballs?

Owls don't have eyeballs. They have eye tubes or cylinders, rod-shaped eyes that do not move in their sockets as eyeballs do. Instead, owls have to move their bodies or heads in order to look around. Since moving their torsos would likely make noise that would alert their prey to their presence, owls have evolved to have necks that can spin up to 270° essentially silently.

But why favour neck-spinning over the seemingly simple eye ball-spinning method of looking around? Well, night vision requires large corneas that allow for light to be collected effectively even in the dark, which is why most nocturnal animals (like the slow loris or tarsier) have huge eyes. But owls have small skulls, so their big eyes couldn’t expand out. They instead developed into the rod shape of today’s owls. They aren’t alone though: some deep-sea fish (like the anglerfish) also have rod-shaped eyes for seeing in the dark. 

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Are humans the only species with chins?

Humans are the only animals on earth with chins. The chin could be a "spandrel" or evolutionary by-product. It may be the result of the human face shrinking over time as our posture straightened and our faces shortened, or a remnant from a period of longer jaws.

The chin isn’t just the lower part of your face: It’s a specific term for that little piece of bone extending from the jaw. While it may seem odd, humans are in fact the only animals that have one. Even chimpanzees and gorillas, our closest genetic cousins, lack chins. Instead of poking forward, their lower jaws slope down and back from their front teeth. Even other ancient hominids, like the Neanderthals, didn’t have chins —their faces simply ended in a flat plane.     

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What is so special about Dracula simia orchid?

The Dracula simia orchid resembles a monkey's face. Native to the tropical forests of south-eastern Ecuador, Dracula simia or monkey orchid, thrives at altitudes around 6,500 feet. The "Dracula" in the name refers to long spikes that resemble fangs at the end of their petals. The orchids bloom in any season and emit the scent of ripe oranges. Dracula simia is one of 118 species in the Dracula genus of orchids, many of which resemble monkey faces.

Dracula simia, also known as a monkey orchid, is native to southeastern Ecuador. Flourishing in the country's tropical highland forests, it's one of at least 10,000 types of orchids found in the tropics. Its long-tailed, reddish-brown flowers have a pair of dotted “eyes” that look remarkably like the face of a capuchin monkey, which makes it a sight to behold.

Besides their adorable looks, these monkey orchids are also quite fragrant. In fact, they smell like ripe oranges when in bloom. They can flower at any time of year and natively grow at around 6,500 feet. So if you want to catch a glimpse of them where they typically grow, prepare yourself for a hike.

The Dracula simia is just one of 118 species in the Dracula genus of orchids—many of which resemble monkeys. The genus got its name due to the rusty red color of several species. Though they are native to Central America and Peru, nearly half the genus can be found just in Ecuador.

These exotic flowers thrive in deep shade, love humidity, and, contrary to what you might think, prefer cold temperatures. However, if you want to take a stab at growing your own, it is possible to find vendors selling seeds online. But, before you take the plunge, please take note that cultivating these seeds isn't advised for orchid newcomers. Monkey orchid seeds are almost like dust and require specialized care in order to grow properly. And even when everything is done to perfection, it will take anywhere from three to eight years for the plant to reach blooming size.

If you feel that you have the know-how and can provide the proper environment, these are some Dracula orchids that are easier to grow: Dracula erythrocheateDracula bella, and Dracula cordobae. Just be sure to purchase seeds from a reputable dealer, as there are many scammers advertising monkey orchid seeds but are actually sending different species.

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Who is known as pepper queen of India?

Rani Chennabhairadevi is known as "The Pepper Queen' (Raina da Pimenta) of India. Her reign lasted 54 years, the longest by an Indian queen. She ruled from Gerusoppa, capital of the Saluva dynasty, between the 15th and 16th centuries. Her kingdom extended from Goa to Bhatkal and Karwar, up to Malabar. This belt was known as pepper country, as the spice grew in the virgin forests. Shiploads of pepper, betel nut, timber and sandalwood were traded with the Portuguese, British, Dutch and Africans in exchange for precious metals and stones. Most of the trade happened through Mirjan port in Uttara Kannada. The queen resided at and controlled the pepper trade from Mirjan Fort on River Aganashini. The Portuguese and the Keladi kings tried to capture Gerusoppa which Chennabhairadevi thwarted twice. The Keladi kings joined with the Bilagi chieftains to defeat her; she was imprisoned and died in captivity at Keladi.

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How do you see the posts you've liked on insta?

Instagram stores a history of all your liked posts, a handy feature that lets you look back at the photos and videos you liked over time. Open the Instagram app. Go to the profile tab and tap the three horizontal lines. Select Your Activity. Tap on Interactions > Likes. Now you can see the 300 most recent posts you liked ranked from newest to oldest. Use the Sort & Filter option to sort the posts based on author, start date and end date.

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Where the World's largest bacterium discovered?

Scientists have discovered the world's largest-known bacterium, in the form of white filaments the size of human eyelashes, on the surfaces of decaying mangrove leaves in a swamp in Guadeloupe in the Caribbean Sea.

Around 1 cm long, Thiomargarita magnifica is 50 times larger than all other known giant bacteria and the first to be visible with the naked eye. Researchers have compared it to a human encountering another human as tall as Mount Everest.

In most bacteria, the genetic material floats around freely inside the cell. T. magnifica keeps its genetic material inside membrane- bound compartments throughout the cell. It was also found to contain three times as many genes as most bacteria.

The discovery suggests that "large and more complex bacteria may be hiding in plain sight".

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How many ants are there for every person on Earth?

There are 2.5 million ants for every human on earth. A new study has estimated that the total global population of ants is a mind-blowing 20 quadrillion (20 by 15 zeroes) or approximately 2.5 million ants crawling around for every human.

The combined biomass of all ants on Earth amounts to 12 megatons of carbon. Biomass is the total quantity or weight of organisms in a given area. This exceeds the combined biomass of wild birds and mammals (2 million tons) and equals 20% of human biomass.

There are more than 12,000 known species of ants, generally black, brown or red in colour. Ants are most abundant in tropical and subtropical regions; they can be found nearly everywhere, except Antarctica, Greenland, Iceland and some island nations.

Ants serve as key ecological players for nutrient cycling, decomposition processes, plant seed dispersal and the agitation of soil. "Think about the amount of organic matter that 20 quadrillion ants transport, remove, recycle and eat. In fact, ants are so essential for the smooth working of biological processes that they can be seen as ecosystem engineers. The late ant scientist E.O. Wilson once called them 'the little things that run the world'," says entomologist Patrick Schultheiss, co-author of the study.

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Why do epaulette sharks walk on land?

Researchers at a Florida university say a species of shark with the ability to walk on land is evolving to survive warming seas and the climate crisis.

The epaulette shark, found on shallow reefs of Australia and New Guinea, can walk for upto 90 feet on dry land using its paddle-shaped fins, and survive hypoxia (deficiency of oxygen) for up to two hours. The 3 foot long sharks are able to slow and fast walk, as well as swim, giving them an exceptional ability to cross land to reach more favourable environments.

Tide pools and coral reef environments are subjected to warm temperatures when the tide is out. These sharks can move from tide pool to tide pool, allowing them to access new pools to forage for food or tide pools with better oxygenated water.

What sets epaulette sharks apart from other shark species with these abilities, is their tolerance of hypoxia for a prolonged period, and ability to not only survive being on land but walk distances up to 30 times its body length. This gives them better agility to evade predators, reach areas with more plentiful food and less competition for it.

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What kind of app is Destiny Lights?

Destiny Lights is a kind of social network in which users can explore ideas and exchange messages. Express your thoughts, ideas and anything you want to vent in the form of 'lanterns'. You can also anonymously post lanterns. These lanterns fly around the world, and fellow users can catch them and read your message. You can read other lanterns and like, save or leave a comment on them. The author will be able to receive and reply to comments on his/her lantern. The more likes it gets, the faster your lantern flies around and reaches different locations. If a lantern reaches 370 cities, it is included in the Top 50 lanterns in the app. If lantern in a foreign language, it has a built-in translator, too. The app also lets you find a you see how many people have read your update across the world. Free for Android.

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How does a foot mouse help disabled people?

The Foot Mouse by Califor Design is designed for people who are unable to use their hands due to disability or a neurological condition. Winner of the Red Dot Design Concept Award 2022, the Foot Mouse transfers control to the feet, allowing the user to navigate and click by resting a foot on it. The left and right keys are designed to be operated with the toes. The scrolling function is activated when the left and right buttons are simultaneously pressed, and deactivated when one of the left or right keys is released. "The concave design of the mouse's top surface is combined with human-machine engineering principles to ergonomically fit the complex curvature under the foot, ensuring a stable and comfortable user experience," says Califor Design. "Foot Mouse is designed to fit feet of any width and size and to provide anti-fatigue support for extended periods of use."

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What is the use of Ribo device?

The 'Ribo' is a robotic solution for those looking to enjoy a bit of digital companionship. It "embraces" your smartphone and displays expressions that seem to convey your smartphone's feelings while separated from your hands. Half desktop pet and half smartphone dock, Ribo expresses emotions through its eyes displayed on a circular screen that serves as its face. The "tummy" of the robot is where you can slot your smartphone in. Inserting a charging cable turns Ribo into a charging station when needed. If you hold both of its hands in yours, it can take ECG readings that will be displayed on your phone and on its LCD display. Compared to smart docks with wireless charging and advanced features, Ribo might seem lacking, but what it offers is a more personal and approachable connection with technology.

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Under pressure I feel the urge to try drugs.

My friends often talk about drinking, smoking and vaping. Many of them are also consuming the same. As I don't, I sometimes feel like a misfit in the group. Under pressure I feel the urge to try these things.

As you grow older you will be introduced to a number of new things. Drinking, smoking and vaping can become very addictive vices over time. Many individuals start with thinking of trying it just once and then get habituated to it and are unable to leave it. I appreciate that you have never indulged in the same. I suggest that you refrain from these habits as these are not healthy for your physical and mental well-being.

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I am having difficulty in preparing for my exams.

I am a first year MBBS student. I am having ... difficulty in preparing for my exams thereby decreasing my efficiency. Kindly guide.

Studying as an MBBS student may be overwhelming sometimes. Since the syllabus is vast, you can benefit by dividing the portion equally and preparing an organised daily timetable to help you learn better. Make sure you keep some time as free time or a break time to avoid getting too bogged down by the syllabus. Try learning in terms of pointers first and later elaborate on what you have learnt. Use a highlighter wherever required, this would help to magnify important words or statements. Try to maintain a book on pointers only, this will help you revise your entire portion at one glance, last minute. You can also audio record yourself as you read out a difficult answer and hear it later; according to studies, listening to your own voice repeatedly can help you memorise better.

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I am not good at controlling my anger.

I am not good at controlling my anger. If I let it out, I worsen my relationship with my friends and family. If I keep it in, it keeps bothering me from within and affects my overall personality. It is making my life difficult and I have started talking to less and less people. I fear I will explode if someone talks to me because I do not feel comfortable with the people in my surroundings. What can I do to be at peace with myself as well as with everyone else?

I appreciate your honesty. Talking to fewer people may not always be the best solution, because in life you will have to talk to many other people over time. Indulging in daily physical activities is said to reduce anger. You can go for a run or brisk walk every day; this will help you unwind. Whenever you get angry, it is best to take a brief timeout of maybe 10-15 minutes wherein you can hold yourself better and gather your thoughts, too, before you speak. Simple stretching exercises and focussed breathing exercises (breathe in and breathe out very slowly) will also help you calm down. It is also important to have a friend that you can speak to and vent your emotions and fears to.

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I am stressed about my future.

I am in Class 9. Before the pandemic, I used to be a bright child and a topper, but after the pandemic my grades have deteriorated a lot. I was on the brink of failing in my periodic tests. I am stressed about my future.

The pandemic has caused several changes in the lives of people and many are still facing concerns, though things are back to normal at the moment. It is important for you to find out what exactly has changed in your life during the past two years that led to this drastic change. Did you suffer emotionally? Has your friend circle changed? Has there been something that has upset you or are you worrying about something that you find difficult to speak about? Make a list of all these things to find out what the root cause of the problem is. After you have learnt about the root cause it will be easier for you to tackle it. For example, if you are unable to understand what is being taught, maybe you can take coaching from a specialised teacher for the same. As you go to a higher standard, the studies may also get a little difficult and you may find it difficult to concentrate, understand that you are worried about future, however, this is a concern that is definitely resolvable.

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