The vest uses a phone's backup battery, so it can work for more than eight hours. In addition, users can add "coolant" by adding ice into the included water jug without taking off their vests.

The machines that sell mobile phones or collect used phones, and the apps that connect scrap sellers and buyers are useful solutions at a time when "living green" and "going digital" have become more common.

The glasses can recognize Vietnamese language and read content aloud for users with a high accuracy rate of up to 89 percent.

Vietnamese students claimed two gold and one silver medals at the International Young Investors Awards (IYIA) 2019 held in Indonesia from October 9 to 12.

Two female 12th graders, Nguyen Cao Hoai Thanh and Le Bui Huong Nhu, have created biodegradable bags made of natural materials.

The machine can filter air on streets and can even prevent fine dust, which is dangerous to human health.