In recent years disposable masks have become a huge waste, but people have not found a way to reuse them. Therefore, a group of scientists in Washington, USA sought to make them a material to increase durability and improve the use value of concret…

Nguyen Ngoc Anh (36 years old) used to be a "forest bandit" who illegally cut timber in Vietnam. After many years, he decided to become a forest tour guide, protecting nature and trees.  Nguyen Ngoc Anh (36 years old), who used to illegall…