Although it is wrapped in warm clothes, our body (especially lungs) can withstand a lower limit. Will the too low temperature freeze the lungs?
Q1 Human beings can survive at a low temperature?
In the environment of -40 ℃ , a person can run 3 minutes without wearing any clothes without frostbite. However, in an environment below -60 ° C , if you do not wear clothes, skin will immediately freeze , and the cells will die.
, that is, if anyone rushes naked in the inland plateau in the east of the Antarctic continent (the average annual temperature is lower than -56 ° C), it will die immediately. Even when wearing thick clothes, the skin around the eyes and nose is still risk of severe frostbite.
Breathing cold air may also cause respiratory tract and lung to frostbite. Humans living in a cold environment, such as the Newt, often suffer lung damage . In order to protect the lungs, scientists working in Antarctica use a ventilation pipe to breathe.
This ventilation pipe will pass through the inside of the clothes, so the cold air will be heated by body temperature before reaching the respiratory tract, so that it will not cause damage to the respiratory tract.
Q2 Mars What should I eat?
If you want to build a Mars base that can accommodate 1 million on Mars, how much calories do this base consume and use? How should people immigrant Mars get food?
Martian Base Concept Picture I Picture Source: NASA/Clouds AO/Search
Publishing a paper published by two scientists from the University of China Florida in the United States evaluated this situation. They concluded that Vegetable , insect and artificially trained cell can meet the nutritional needs of Mars immigrant.
, by cultivating cells, Mars immigrants can produce protein in milk, eggs and meat without having to raise any animals.
, the two scientists also pointed out that from the establishment of Mars base to a complete self -sufficient self -no need to obtain food from the earth, Mars immigrant may need 100 time.
Q3 Long running is harmful to the organ?
scientists and doctors both believe that running is good for health, but some studies have pointed out that if they run more and farther than marathon players (such as run for 6 hours or 100 kilometers ), the bodies of these runners may receive a series of series Damage is similar to the impact of severe diseases.
The worst body part of the damage is Heart , liver and kidney . Many runners will suffer from respiratory tract infection after the game.
is the most well -known damage caused by long -distance running is kidney damage . In 2015, a study in the United States showed that 82% of runners had symptoms of acute renal failure, that is, their kidneys could not filter in the blood in the blood. The color of the urine will become darker, and it is soy sauce. This is a manifestation of kidney damage.
these symptoms will gradually disappear after a few days, but scientists worry that repeated renal failure may cause permanent damage.
This article is excerpted from "Strange Point Science" in April 2021
"There is Answer here" column
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