Fubao is coming back to China. How many of these little-known facts about pandas do you know? | Bolan Daily

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Fubao is going back to China.

How many of these little-known facts about pandas do you know?

March 3 was the last day that Fubao met the Korean public before returning home. People lined up to wait from 6 a.m., and even a Chinese aunt went to Korea to pick up Fubao. You must know these little-known facts about pandas~

Pandas spend 54.86% of their day foraging, 43.06% resting, and 2.08% playing. They really eat, sleep, sleep, eat…

Pandas have an extremely low absorption rate for food, so their poop smells fragrant and can be used to make paper. (It sells quite well~)

The panda's vision is equivalent to about 0.8 in the arithmetic progression of the international standard vision chart. If it were a human, they would need to wear myopia glasses with a degree of about 200.

The daily energy expenditure rate of wild and captive giant pandas is very low, at only 37% of what would be expected for their body size, similar to that of sloths and lower than that of koalas.

Giant pandas not only eat bamboo, but are also carnivores. When there is nothing to eat, they will pick up animal carcasses or catch smaller animals for food.

The rumor that giant pandas have a low reproductive capacity is just a rumor (or it may be limited to early artificial captivity). The reproductive capacity of wild giant pandas is not low.

Giant pandas love horse manure, especially fresh horse manure. The fresher the better. They not only smell it, but also roll in it and even smear it all over their bodies.

In fact, the reason why pandas love to hug thighs is very simple. According to the keepers, it is just for fun.

It is generally difficult to tell whether newborn and infant giant panda babies are "boys" or "girls" because giant pandas do not show obvious primary sexual characteristics, and there are no obvious differences in appearance and body shape between males and females.

Ignition successful!

The first in-situ gasification of coal seams 1,000 meters underground in China

Recently, the major scientific and technological project of the Xinjiang Uygur Autonomous Region "Efficient Development Technology of Coalbed Methane Resources in Difficult-to-mine Coal in Xinjiang" undertaken by Xinjiang Yaxin Coalbed Methane Investment and Development (Group) Co., Ltd. has made phased progress, and the underground coal gasification (UCG) field test was successfully ignited in the first time.

This is the first time in China that in-situ gasification of coal seams one kilometer underground has been achieved, which may become another important breakthrough in my country's energy field. It is reported that UCG is a gas extraction technology that effectively controls the combustion of coal in situ through underground ignition to produce combustible gases such as methane, hydrogen and carbon monoxide. It is the first time in China that ignition has been successfully achieved and gas production has been stable one kilometer underground.

What exactly is going on with the “difficult return to the south”?

Early in the morning of Jingzhe today, the south wind returned to Guangdong, causing all the "trendy people" and "wet people" to check in at the "Water Curtain Cave".

The formation principle of the return of the south wind is the same as that of dew, which can be said to be dew condensed at home. When the temperature of an object is greater than the dew point temperature, the water vapor in the air will not condense (the dew point temperature is the temperature at which water vapor in the air turns into dew).

When the temperature of an object is less than or equal to the dew point temperature, the water vapor in the air reaches saturation and condenses into water droplets on the surface of the object, forming "dew".

After a long period of low temperature and rain, indoor and outdoor objects are fully cooled. At this time, if there is a strong southerly warm and humid air current, the temperature will rise sharply, the air pressure will drop, the wind direction will change from north to south, and the wind speed will gradually increase, and the air humidity will tend to be saturated.

Once the dew point temperature is higher than the surface temperature of indoor objects, the water vapor in the air will condense on the surface of objects to form water droplets, forming the "return of the south wind".

Just like when we take a bottle of iced drink out of the refrigerator, a layer of water droplets will soon be attached to the bottle (I want to drink Coke). The famous Huinantian people also have a nickname: Eve Neku Modchuan Bez Mao Degan. (Hello, reviewer, the picture shows the poster fading, not something else...)

The amount of plastic islands in the ocean is beyond imagination, equivalent to 6 France!

There is a lot of plastic in the sea, and plastic can be found at a depth of more than 10,000 meters in the Mariana Trench. How big is the amount of plastic floating in the sea?

At 130° to 160° west longitude and 25° to 40° north latitude, the largest green area is 1.6 million square kilometers, which is the world's largest plastic island. The area of ​​this plastic island is equivalent to 52 Hainan Islands, about the same size as Xinjiang, and equivalent to 6 France. In addition, there is another plastic island next door that is three or four times the size of France.

There are many such islands in the ocean because plastics gather in the still areas in the middle of the ocean currents, thus forming such plastic islands.

If humans continue to use plastics in this way, around 2050, the weight of plastic floating in the sea will exceed the weight of fish in the ocean.

The content comes from the speech given by Ji Junhui, a researcher at the Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences, at the Gezhi Lundao.

The content is compiled from China Science Popularization Expo Weibo, Science and Technology Daily, Guozi Xiaoxin, Science Academy, China Science Daily, Gezhi Lundao Forum

This article was first published in China Science Expo (kepubolan)