CategoryKnowledge

Amid fears of oil depletion, shale gas has emerged as an alternative energy source, with production surging in the United States. While shale gas offers economic benefits, it also brings with it environmental concerns that are driving the transformation of energy markets. The balance of global energy markets is set to shift dramatically, and it’s important for governments to respond.  ...

Coke cans are made of aluminum and juice cans are made of iron because the two materials have different yield strengths and tensile forces. Aluminum stretches easily, making it ideal for thin cans, while iron is stronger but harder to stretch and is used for thicker cans.   Coke cans and juice cans are made of different metals. Soda cans are mainly made of aluminum, while non-carbonated...

Umami is the fifth taste, and it’s caused by an amino acid called glutamic acid. Many people mistake MSG for an artificial additive, but it’s a natural seasoning derived from nature. When used properly, it is healthier than salt and has been recognized as a safe food additive.   The word umami is ubiquitous in modern food culture. Many people use the word, but unfortunately, not...

This article explains rotary drilling technology, which uses a similar principle to piercing paper with an awl to drill thousands of meters underground. It details the process of drilling through strata using compressive and rotational forces through equipment such as drill strings, mud circulation systems, and mud motors to overcome various underground obstacles.   If you’ve ever...

Unlike in childhood, when milk was easily digested, many people become lactose intolerant as adults. This is caused by a lack of the enzyme that breaks down lactose, and lactose-free milk solves this problem. Explain the causes of lactose intolerance and how to treat it.   Have you ever seen a product called “easy-to-digest milk” and wondered why it has this name? Thinking backwards, is milk...

Biomedical materials are used in the pursuit of a disease-free life through organ transplantation and replacement, and include a variety of materials such as polymers, metals, and ceramics. With their biocompatibility and physical properties, these materials can replace or complement damaged tissues in the human body to extend life and contribute to medical innovation through personalized...

The Samsung vs. Apple court case highlights the importance of software patents to the IT industry, and the balance between intellectual property protection and technological advancement is a key issue. However, software patents have been criticized for stifling technological advancement, reinforcing a conglomerate-centric structure, and increasing disputes.   The court battle between Samsung...

This article explains why people persist in altruistic behaviors that are detrimental to themselves through cost-signaling theory. According to this theory, altruistic behavior may not simply be a loss, but rather a process of proving to others that they are capable of greater good.   In life, we often see people who help others even when it doesn’t seem to benefit them at all, or even...

A college freshman suffers from constipation due to irregular diet and lack of exercise. Constipation is caused by poor bowel motility, which can be improved with fiber, probiotics, and a regular lifestyle.   A, a freshman in college, has been suffering from constipation lately. She can’t even think about eating breakfast, and she often eats bread for lunch. In the evening, when she...

Drawing on his grandparents’ farming experiences, the author explains how nanotechnology is being applied to pesticides, herbicides, fertilizers, and more, and highlights how these technologies are making agriculture more efficient and environmentally friendly.   My grandparents in the countryside have been farming for a long time. As a child, I spent most of my time in the...