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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Why was the Arctic Ocean, the smallest of all oceans, in the news recently?

The Arctic Ocean, which is the smallest of the world's oceans, lies close to the North Pole. Along with its marginal seas the Chukchi, East Siberian, Laptev, Kara, Barents, Greenland, and Beaufort, the Arctic Ocean has the least-known basins and bodies of water in the world's oceans due to its remoteness, difficult weather, and perennial or seasonal ice cover.

About four million people live in the Arctic region. Many of them are indigenous groups that have thrived in this harsh climate for hundreds of years. They rely mostly on the ocean resources for surviving this harsh climate and generate livelihood through these activities. Fishing, sealing, whaling, and other activities are their livelihood means. The U.S., Canada, Greenland, Iceland, Norway, and Russia all have territories that reach into the Arctic Ocean.

The Arctic Ocean is in the news these days because of its effects on global warming. Rising temperatures in the Arctic are expected to cause large amounts of fresh melt-water to enter the north Atlantic, an event that will possibly disrupt global ocean current patterns. This will lead to drastic changes in the Earth's climate. When the extent of sea ice diminishes and the sea level rises, the effect of storms (such as the Great Arctic Cyclone of 2012) on open water increases. Reduced sea ice also leads to increased human-animal conflicts. It will, for example, cause polar bears to search for new sources of food, forcing them to move into human territories. Since December 2018, the archipelago of Novaya Zemlya has been under a mass invasion of polar bears, and in February 2019, a state of emergency was declared there. Dozens of polar bears were entering homes, public buildings, and inhabited areas in search of food. All this led to the Arctic Ocean being in the news.

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A black hole in Earth's backyard?

This new black hole is 1.600 light-years away in the constellation Ophiuchus So far scientists have discovered 20 black holes in the Milky Way. About 100 million more are estimated to be present in our galaxy.

A new black hole has been discovered very near to Earth, closer than any other previously found. Christened Gaia BH1, this dormant blackhole is 1.600 light-years away in the constellation Ophiuchus.

This new black hole is ten times as massive as our sun. To date, scientists have found 20 black holes in the Milky Way galaxy whilst 100 million more are estimated to be present in our galaxy. The newly discovered one is three times closer than the earlier black hole which sat about 3,000 light-years away in the constellation Monoceros.

Since there are more undetected black holes, even this newly discovered one wouldn't hold its spot of "closest to Earth" for too long.

The discovery was mentioned in a paper in the peer-reviewed Monthly Notices of the Royal Astronomical Society. The black hole was discovered by "Kareem El-Badry, an astrophysicist at the Harvard-Smithsonian Center for Astrophysics and his colleagues.

They found evidence of the existence of this dormant black hole using the data from the European Space Agency's GAIA (Global Astrometric Interferometer for Astrophysics) spacecraft. After they noticed a star in the constellation Ophiuchus moving in unexpected ways, they understood that it was a result of the gravity of an unknown, massive object. Using the observation from other telescopes, they confirmed that the object causing this was a black hole.

What is a Black Hole

A black hole is a celestial body that has an immensely huge gravitational pull, so huge that nothing escapes it. Not even light can escape i it!

The black hole grows by accumulating matter that falls in it. Black holes are formed at the end of the life of a big star. When a massive star collapses after its nuclear fuel depletes, it will collapse onto itself and become a black hole.

 It was in 2019 that an image of a black hole was captured for the first time. It was an international collaboration and the astronomers used the Event Horizon Telescope (EHT), networking eight ground-based radio telescopes.

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