Is it easier to get sick by taking a plane?

There are more and more people traveling by plane, but people do not know that there are many bacteria on the plane, especially in the five most places. Experts suggest that there should be fewer encounters on the plane. Tray table: Studies have shown that the tray table is eight times more bacteria than the…

Nine hours by plane, where did the oxygen come from on the plane?

As we all know, what we breathe on the ground is a standard atmospheric pressure. The higher the air pressure is, the lower the density, the thinner the air is at a height of 10,000 meters, and the lower the temperature is, it is impossible for people to survive in this environment. But it’s different…