Why do the north and south magnetic poles on the earth keep changing
On December 6, 1905, Norwegian explorer Amundsen explored the position of the north magnetic pole on King William Island. Interestingly, he discovered that this pole …
Category: why
Why natural gas is a clean and efficient energy source
People have known natural gas for a long time. The ancients began to boil salt with natural gas more than 2,000 years ago. However, this …
Why 3D movies look so real
On December 28, 1895, the French Lumière brothers used their invented “moving movie machine” in a cafe in Paris to screen films such as “Train …
Why are birds’ mouths so diverse?
If you like birds, you will find a variety of bird beaks. The beak of a chicken is short and delicate, the beak of a …
Why some insects won’t die in the cold winter
In spring, the temperature gradually rises, and insects come out one after another. Some bite crops, some steal food, some bit humans and animals…At this …
The earth’s raindrops are 1 cm in diameter. Will raindrops on other planets be larger?
On the earth, we can often see raindrops, whether it is drizzle or pouring rain, every raindrop on the earth theoretically has the largest and …
Looking at the earth from the moon, why does it make people feel terrified?
In addition to the earth and the sun, the moon is the most familiar celestial body to mankind. Except for the new moon and rainy …
Why does catnip make cats cheer up? Is it harmful to cats?
Friends who raise cats, I don’t know if you have ever seen such a large-scale famous scene. The cats gather together in groups, and it …
“Mushrooms” are found on Mars and are still growing. What is it?
Mars is very “lively” now, and multiple human spacecraft are visiting this red planet. my country’s Tianwen-1 is orbiting Mars and will choose an opportunity …
Why does the baby stop crying after being picked up? It turns out that there is a dark history hidden here
For babies who have not been able to move, crying is the only way for them to express their needs. Whether they are thirsty, hungry, …
Are African and Asian leopards different species?
Leopard, a large cat that is widely distributed on two continents in Asia and Africa. In the 1990s, molecular genetics researchers tested the mitochondrial genes …
Why do birds recognize the way?
The reason why birds can recognize the way A long time ago, people had a keen interest in the ability of birds to know the …