In this blog post, we’ll explore the background, operating principles, and recent research trends of organic solar cells—which are evolving into various forms beyond traditional silicon solar cells.   Limitations of Conventional Solar Cells and the Emergence of Organic Solar Cells When visiting government offices or schools, don’t just look at the entrance—take a moment to glance up at the...

In this blog post, I’ll look back on the moment when I felt most useless and talk about the reasons behind it and what I learned from that experience.   This happened when I was a senior in high school. I was the type of person who spent a lot of time joking around with my friends. One day, a friend was teasing me and, as a joke, hit me hard in the chest, which really upset me. We were...

In this blog post, we’ll examine human altruistic behavior through the lens of the costly signaling hypothesis and explore how such behavior can be explained from an evolutionary perspective.   Altruistic Behavior Easily Found in Everyday Life “The mistakes of humanity in the 20th century ultimately led to global poverty. Governments and economies around the world have completely collapsed...

In this blog post, we’ll explore the reasons behind slow network speeds on smartphones and the wireless communication technologies that have been developed to address this issue.   We’re often referred to as living in the “smart era.” There are tens of millions of smartphones in use in South Korea alone, and new models with even better performance and a wider range of features continue to be...

In this blog post, we’ll explore how tissue engineering is used to cultivate artificial tissues, as well as how cell removal and repopulation techniques are applied.   Tissue Engineering and Artificial Tissue Cultivation Have you ever seen the movie ‘Face/Off’? Starring Nicolas Cage, this action film thrillingly explores the intriguing question, “What would happen if my face were...

In this blog post, I’d like to talk about the kind of life I’ve always wanted to live and the values I’ve learned through that journey.   The day before my first June mock exam administered by the Korea Institute for Curriculum and Evaluation as a high school senior, I called my older brother—who is five years older than me—and burst into tears. Overwhelmed by the immense pressure and...

In this blog post, we will examine the evolutionary biological debate over whether male rape is a biological adaptation, along with the critiques of that view, after proofreading and editing the text.   The Concepts of Rape and Biological Adaptation According to international crime statistics published by the United Nations Office on Drugs and Crime (UNODC), sexual violence crimes continue...

In this blog post, we’ll explore the operating principle behind the “Air Multiplier”—a bladeless fan that generates a strong breeze using only a small amount of air.   It is said that early fans took the form of large fans suspended from the ceiling, designed to swing like a pendulum using the weight of a counterweight. Later, after the development of machines that connected a windmill to a...

In this blog post, we’ll take a simple look at what astigmatism is, how it occurs, and how it’s corrected.   Astigmatism is a condition in which the eye’s refractive power isn’t uniform across all directions of the eyeball, preventing light from focusing precisely on a single point. In the past, many people had vision of 1.0 or better without surgery, but today it is common for people to...

In this blog post, we’ll examine various perspectives on whether abortion can truly be deemed an immoral act, and we’ll explore the issue by focusing on the lives of parents and the unborn, social realities, and individual choice.   As the number of countries with low birth rates increases worldwide, interest in induced abortion—or abortion—is also on the rise. While many people condemn...