Fusion appears to be an unlimited source of clean energy. However, a fundamental question still remains about the origin of fusion energy. Stars can perform fusion because of their immense gravity. Laboratories can do it due to their tremendous consumption of electricity. Nobody can make energy out of nothing, as…

Nowadays we have more and more leisure time with the help of science and technology. How to spend it will determine our future. There is no shortage of wonderful books and films around the world, but hardly anyone has full access to them because of copyright protection. …

*Physical evolution has its limits in the long term. The fact that the Earth will not last forever poses the greatest challenge to all the lives on the planet. No matter how successfully life forms have physically evolved on the Earth, they will inevitably go extinct once their home planet…

The news about the arrival of Covid-19 vaccines was exciting last year. Many people, however, are still hesitant to get immunized. It is vaccinations that will end the pandemic at the lowest cost. I think that a vaccination dashboard is needed for the illustration of vaccine quality. The dashboard includes…

Mathematics involves a lot of calculation with numbers. Since the calculating process is a logical one, it is important for a language to form the right words for numbers. Twenty-six, for instance, is a right word for 26, because ‘twenty-six’ indicates 2 before 6. Sixteen, on the other hand, is…

A creative problem-solver needs logical thinking with imagination, because imagination enables one to form something new in the mind while logical thinking helps to distinguish an effective solution from impractical ones. Without imagination, you will probably get stuck in a new problem. Without logic, on the other hand, you are…

Most patients with Covid-19 can be infectious about two days before they develop symptoms. Some patients who never show any symptoms can still infect others before their recovery. The transmission during both asymptomatic periods is hard to detect. As asymptomatic patients hardly cough or sneeze, their spread of the virus should…

As schools are usually empty at weekends, it is possible to reduce the density of students by keeping schools open on Saturday and Sunday. In theory, the density will be reduced by 28% (2/7=28%). For example, if a school has 5 classrooms and 5 classes, then divide students evenly into…