This article analyzes how students feel when grading papers in red and how it affects their learning, covering the positive and negative aspects of red, and discussing the effects of using other colors instead of red.   We’ve all had the experience of taking a test in elementary school and coming home with a test paper graded in red pencil. If you did well on the test, you remember...

We rely on our memories for everything we experience in life, and these memories have a profound impact on our personality, habits, and important decisions. Memories are stored in different parts of the brain, both short-term and long-term, and the process plays an important role in shaping our identity and even our social behavior.   We live our lives mortgaged to our memories. Our memories...

Advances in genetically engineered technologies offer increasing benefits for human health and longevity, but they also pose threats to human nature and social values. We need to think about the ethical application of these technologies.   In the movie Gattaca, most children are born with artificially engineered genes. The parents’ sperm and eggs are collected and artificially...

Electric cars are environmentally friendly, but they’re not very popular due to mistrust of their performance and financial burden. This is because modern people only care about the environment when it directly benefits them.   The recent haze of fine dust has made people more aware of environmental protection. In the past, a television program has raised awareness about environmental...

This article begins with the problem of racism in the United States, tracing the Nazi genocide of Jews and the origins of eugenics to the contemporary ethical debate over genetic selection. It highlights the historical context of eugenics and the danger that modern applications of eugenics can promote disregard for life and discrimination, and argues that preserving human dignity is more...

Stimulating social change and anonymity are key factors in the rise of aggression on the internet, and the power of information and anonymity in this environment is making people more aggressive.   What is the standard of strength? Long ago, when humans were evolving, physical strength or experience may have been the measure of strength. As villages formed and wars began, power became the...

This article begins with a story about the design and beauty of the circuitry inside Apple’s Mac computers, and explains the important role that EE plays in computer circuit design. It covers the complexity of circuits and the importance of design, emphasizing the essential role of EE as engineers constantly validate and modify their designs to perfect them.   Before we talk about EE...

This article explains how wireless internet technology works, its inefficiencies, and how it affects devices like smartphones. It also provides an outlook on the present and future of wireless internet through the evolution of 3G and LTE technologies, and explores how future technological advances could improve power consumption and reliability.   We are now in an era where the internet is...

Acetylsalicylic acid, or aspirin, has evolved from an ancient natural medicine derived from willow bark to a modern-day staple, with more than 100 million pills consumed daily around the world for a variety of benefits, including fever-reducing, pain-relieving, and inflammatory properties, as well as cardiovascular disease and cancer prevention.   Have you ever heard of a substance called...

Koreans use an average of 346 liters of water per day, and this contaminated water is purified through primary, secondary, and tertiary treatment at sewage treatment plants. The water is then discharged into nature to remove suspended solids, organic chemicals, heavy metals, and pathogens, and is recycled into clean water through nature’s self-correcting process.   How much water did...