Why are there several waves of covid?
A very nice little video where he simulates infectious diseases by explaining the different parameters. This makes it possible to understand why a disease or a virus comes and goes.
Hair dryer catches fire
Hair dryer catches fire in Sam Son, Tsinghua, Vietnam
Arm wrestling
On October 28, 2020 in Dubai was held an arm wrestling competition. Arm wrestler with the name Schoolboy causes a sensation and proves that it is not necessarily the size that matters