In this blog post, we’ll explore everything from the principles behind how ships generate thrust to move forward, to the characteristics of various types of resistance—such as frictional resistance and wave resistance—that hinder a ship’s speed, and finally, methods for reducing these resistances to operate more efficiently with less energy.   The modes of transportation we use in our daily...

In this blog post, we will examine the basic principles of embryonic stem cells and the clinical and technical challenges involved in the laboratory cloning process, and explore how induced pluripotent stem cells and transdifferentiation technology might serve as alternatives.   What are stem cells? Dr. Hwang Woo-suk’s stem cell research, published in ‘Science’ in the past...

In this blog post, we’ll explore everything from the differences between radiation, radioactive materials, and radioactivity to the units of radiation dose, its effects on the human body, and the basic information you need to know to properly understand radiation.   Although public concern about the dangers of radiation has risen significantly in the wake of past nuclear power plant...

In this blog post, we’ll examine the causes of sinkholes—which occur when hollow spaces underground collapse—the differences between naturally formed sinkholes and ground subsidence in urban areas, and ways to prevent them.   Imagine if the home you worked so hard to make your dream of homeownership a reality were suddenly swallowed up by a massive hole that appeared out of nowhere in the...

In this blog post, we’ll examine why bioenergy is considered eco-friendly even though it emits carbon dioxide, explore the Earth’s carbon cycle, and discuss the advantages of bioenergy.   One of the biggest issues of the 21st century is environmental pollution. Among these, carbon dioxide emissions are a particularly contentious issue. While the development of petroleum has enabled humanity...

In this blog post, we’ll explore the principles of quorum sensing—a form of chemical communication among microorganisms—as well as its role in biofilm formation, pathogenicity, and potential industrial applications.   Have you ever heard of the deep-sea anglerfish? This species uses light-emitting antennae to attract and capture prey in the pitch-black depths of the ocean. Similarly, the...

In this blog post, we’ll examine why shots commonly referred to in soccer as “spinless shots” or “knuckleballs” wobble erratically through the air, from the perspective of fluid dynamics and airflow.   Today, the so-called “spin-free shot”—a shot with almost no spin—is attracting significant attention from many soccer players and fans. On online video sites, it’s easy to find not only...

In this blog post, we’ll explore the evolution of body stability technology—from the basic principles of suspension, which determine a car’s ride comfort, to Mercedes-Benz’s Active Body Control (ABC), Magic Body Control, and today’s E-ACTIVE BODY CONTROL.   As cars have become deeply integrated into everyday life, people now spend more time inside them than ever before. Consequently, the...

In this blog post, we’ll explore the concept of artificial intelligence, the principles of machine learning, the difference between supervised and unsupervised learning, the pros and cons of machine learning, and its various applications.   Artificial intelligence (AI) became a global topic of discussion following the match between AlphaGo—an AI developed by Google—and Lee Sedol, the world’s...

In this blog post, I’d like to examine the ethical issues surrounding designer babies—ranging from the birth of designer babies for therapeutic purposes to embryo selection and disposal, the human rights and freedom of choice of designer babies, the potential for misuse of the technology, and social inequality.   There is a movie called ‘My Sister’s Keeper’ that tells the story...