What is the difference between calcium tablets at different prices?
2023-12-27
Consumers who often buy calcium tablets will find that some calcium tablets cost a few yuan a bottle, while others cost hundreds of yuan a bottle. What is the difference between calcium tablets with such a big price difference?
Read More
6 common misunderstandings about AIDS
2023-12-27
December 1 this year is the 36th World AIDS Day. This year’s theme is “Gathering Social Power to Fight AIDS Together.”
Read More
Respiratory infectious diseases require masks
2023-12-17
Respiratory infectious diseases are mainly spread through respiratory droplets, inhalation of aerosols containing pathogens, or close contact. Wearing masks scientifically is an effective measure to prevent respiratory infectious diseases.
Read More
What are the differences between artificial snow and natural snow?
2023-12-17
With the arrival of a cold air, a snowfall fell and covered our city with a layer of white fur coat. However, in this cold and freezing environment, one outdoor sport has started to warm up, which is skiing
Read More
Can snowfall freeze viruses to death?
2023-12-17
Snowfall itself does not directly reduce the occurrence of disease, but people may choose to stay indoors because of snow, thereby reducing contact with others and the frequency of going out, which may indirectly affect the spread of the virus.
Read More
Who created the magical light pillar?
2023-12-14
Light pillar is an ice halo phenomenon comparable to the aurora, which is formed by the reflection of light from ice crystals in the atmosphere.
Read More
Who creates dioxin?
2023-12-14
Scientists have found that dioxins have two important natural sources - forest fires and the decomposition of chlorophenols
Read More
Dioxins - the most poisonous substance known
2023-12-14
Dioxins are a general term for a class of chemical substances. There are 210 chemical substances that have been discovered that can be classified as dioxin, 17 of which can cause great harm to the human body.
Read More
After 38 years of absence, Halley’s Comet finally begins to return
2023-12-14
When we talk about comets, we all think of Halley's Comet. It is indeed the most famous comet. It comes near the earth every 76 years and looks very bright every time, so it has received unique attention.
Read More
Never heat plastic lunch boxes in the microwave!
2023-12-12
Microwave heating results in the highest release of microplastics and nanoplastics into food, with more than 2 billion nanoplastics and 4 million microplastics released per square centimeter of container
Read More
total 162