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How many blood types do we have? Why is AB-positive blood type a universal recipient and O-negative blood type a universal donor? How does blood matching work? What are antigens and antibodies?

How does blood type (ABO) incompatibility affect pregnancies? Blood type (ABO) incompatibility is a complication that can occur during pregnancies and not only in blood transfusion. If left unchecked, it can lead to stillbirth. It is a serious threat to women living in less developed countries that have less than optimal healthcare systems.

Game theory helps to organize our options and their consequences in a systematic way. By analyzing all the players' options, game theory can improve our decision-making process. Prisoners' dilemma is a classic textbook example used to explain the game theory.

Why do people view office politics as a zero-sum game? Can the game theory be used to explain this cognitive bias? In a zero-game game, does backstabbing really help you to climb the corporate ladder?

What is a non-zero-sum game? Are we all playing multiple non-zero-sum games in this imperfect world? Can the iterated prisoners' dilemma help to explain the choices we make? What is the best strategy to counteract the "always cheat" strategy?

With 5G, smart glasses will replace smartphones very soon, possibly by 2025, through AR technology. Big tech companies are shifting towards handsfree tech with a hand gesture or eye movement as the controller. Generally, AR tech evolves into MR tech and Microsoft Hololens is only the tip of an iceberg.

In just2mins, you will learn: what is 5G, what are the benefits of 5G, how does 5G work, and 5G health concerns.

How does blood type (Rh) incompatibility affect pregnancies? Rh incompatibility is a more serious pregnancy problem than ABO incompatibility. If left untreated, it could affect an Rh-negative woman's future pregnancies. To all the ladies out there, do you have an Rh-negative blood type?

The new PSLE scoring system will take effect in 2021. So, what is PSLE? What is the main difference between the old and the new PSLE scoring system? Can the game theory help us understand how the parents and pupils would react and respond to such a change?

Why do we see the blue sky? Why is the sky blue? What does the color of the sky have to do with Rayleigh's scattering and the Earth's atmosphere? What would the sky look like without its atmosphere?

Why is the sky red at sunrise and sunset but white at noon? Why is the sky blue at other times of the day? What do all these have to do with Rayleigh's scattering? Is the sunlight traveling a longer distance during sunrise and sunset or at noon?

Why are some clouds white and some clouds dark? What are clouds? What does the color of the cloud have to do with Mie scattering? Why do dark clouds often bring rain?

E.coli. What are they? Are they friends or foes? What harm can they do to our bodies? How does someone become infected by E.coli? What is a hemolytic uremic syndrome? If a person is infected with E.coli, does he become contagious? Why are there so many E.coli outbreak cases linked to romaine lettuce? Why did Tanimura and Antle and Dole fresh vegetables recall their romaine lettuce products? Is there any vaccine or antibiotics available for E.coli infection? How can we protect ourselves from getting E.coli infection?

Singapore becomes the first country to approve the sale of lab-grown meat. Singapore has given U.S. start-up Eat Just the green light to sell its lab-grown chicken meat, in what the firm says is the world’s first regulatory approval for so-called clean meat that does not come from slaughtered animals. What is lab-grown meat? How is lab-grown meat produced? What benefits do lab-grown meat have over conventional meat?

How do RNA vaccines work in the human body? How does the body's immune system work? What is a vaccine? Does the vaccine work well on a compromised immune system? Recently, there has been a lot of hype surrounding the mRNA vaccine in the treatment of the coronavirus? What is an mRNA vaccine? How does the mRNA vaccine work and how is it different from the conventional vaccines that we are so accustomed to?

What is underground living? For many of us who are accustomed to living in high-rise buildings, the thought of living in the underground world may seem far-fetched or unfathomable. What are the plausible problems and difficulties associated with underground world living? The rising sea levels and temperatures, and deteriorating air pollution are some of the reasons that may compel us to seek refuge permanently underground. Are we ready for it?

Why would anyone want to live underground? What are the benefits of living underground? Will underground living become the future of housing and accommodation? What is an earth scraper? From cavemen to hobbits, is this the direction that evolution is leading us to?

A famous example of Simpson’s paradox appears in the admissions data for graduate school at UC Berkeley in the fall of 1973, where it almost got sued for gender discrimination. How is it even possible that opposite arguments could be proven using the same data? In this video, we shall make use of mathematics and hypothetical numerical figures to explain why and how Simpson's paradox occurs. By understanding the possible implication regarding any misuse of Simpson's paradox, whether intentional or unintentional, we would be better prepared to analyze the data in an objective manner.

What if we swallow bubble gum? According to popular folklore, any gum swallowed would remain in our stomach for 7 years before it gets digested. Does this old adage hold a ring of truth? Will the sticky bubble gum stick to the side of our intestine? How long does it take for the body to dispose of the bubble gum naturally?

What is Simpson's paradox? Michael Jordan and Lebron James are arguably two of the best basketball players that the world has ever seen. So, who is the GOAT? Michael Jordan or Lebron James? Do you know that one can prove an opposite argument using the same data? Simpson's paradox is a commonplace statistical phenomenon that shows how our intuition can fail us. Stats obtained from the following links: https://www.espn.com/nba/player/stats/_/id/1966/lebron-james https://www.espn.com/nba/player/stats/_/id/1035/michael-jordan

Let's understand the science and math behind the 'Great Conjunction of Jupiter and Saturn'. What is a conjunction? What is a 'Great Conjunction'? When would the next great conjunction of Jupiter and Saturn take place? What is so special about the great conjunction of the year 2020? Is there a math formula that we could use to calculate the year of the next conjunction?

Survivorship bias: how success stories can be misleading? What is survivorship bias? Have you ever wondered why people are hyped up by the success stories of internet gurus? If we aren't alert, we could easily fall prey to their "success stories" and get sold on their ideas or products. By understanding what survivorship bias is, we would be better prepared to make well-informed decisions.

Is time travel possible? What is time? If time travel were possible, could we have stopped the Covid-19 pandemic? What is the 'Grandfather paradox'? Does the 'Grandfather Paradox' convince you that time travel to the past would never work or is it just one of the many questions to be solved once we have developed a time machine?

One of the mathematical theories taught at the high school level is the concept of the Pythagorean Theorem, also known as the Pythagoras' Theorem. The Pythagorean theorem describes a special relationship between the sides of a right-angled triangle. Even the ancients knew of this relationship. However, have you heard of the Gougu Theorem? It is actually the Chinese equivalent of the Pythagorean Theorem. More than 2000 years ago, the ancient Chinese had already demonstrated how this theorem could be proven using a visual approach.

Why do our fingers wrinkle when wet? If we think about it, our fingers should swell when soaked in water and not the opposite. Is there any evolutionary function of having wet wrinkly fingers?