As electric vehicles rise to prominence, hydrogen cars are experiencing sluggish sales. Observing this situation, some say, “Has hydrogen lost its value as a future energy source?” However, from a societal perspective, hydrogen holds immense value that cannot be abandoned. It emits no environmental pollutants and has a high calorific value, making its applications virtually limitless depending on how it is utilized.There is one important thing to understand about hydrogen: it is a secondary energy source, or an “energy carrier,” that must be produced using other forms of energy. Hydrogen can be obtained by electrolyzing water, but this process requires electricity, meaning other energy inputs are needed to produce hydrogen. It can also be extracted from natural gas, but this too requires natural gas as a raw material and additional energy such as electricity during the conversion process.Because of this, many believe that “hydrogen ultimately cannot be a clean energy source.” This stat

2025.01.03 10:33

Singer Lim Young-woong expressed his position 21 days after the DM controversy. This took place at the first performance of his solo concert ‘Lim Young-woong Recital (RE:CITAL)’ held on the 27th at the Gocheok Sky Dome in Seoul.During the first speech after the concert opening, Lim Young-woong said, “I apologize for causing you worry and concern,” and added, “It was a time to learn a lot. I am a person who sings. My role is to bring joy, comfort, and happiness through my songs. I will come back with a more improved version of myself.” While there was much interest in whether Lim Young-woong would address the controversy that day, reactions from fans and the public were mixed regarding his apology on stage, where he bowed his head directly to the fans.The controversy began on the 7th when Lim Young-woong posted on his social media celebrating his pet dog’s birthday. At that time, South Korea was experiencing turmoil following President Yoon Suk-yeol’s declaration and lifting of martial

2024.12.28 23:59

The first artificial satellite was the ‘Sputnik,’ launched in October 1957. It was only 67 years ago that humanity rejoiced as a small object sending just beeping signals was placed into Earth's orbit. The first astronaut, ‘Yuri Gagarin,’ spent 108 minutes outside Earth, and the first astronaut to reach the Moon, ‘Neil Armstrong,’ conducted extravehicular activity on the lunar surface for just over two hours. Space was revered as a mysterious entity whose significance was found merely by having ‘touched it once.’ However, the situation has now begun to change. Thanks to the remarkable advancement of science and technology, space is no longer an object of ‘challenge’ but is becoming an object of ‘pioneering.’Until now, we have mainly used outer space to create a ‘more convenient Earth environment.’ For example, the development of satellite positioning systems (GPS) and satellite communication technology has greatly improved the lives of humanity living on Earth. Recently, however, the g

2024.12.06 11:33