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science
Summary: Many organisms in nature have their unique means of protecting themselves. Some have evolved into sensitive senses and can quickly evacuate before encountering danger; others have evolved into hard shells that cannot be easily broken by any predator.
The hardest shell in the world can't even penetrate bullets, scientists use it to develop bulletproof clothing
science
As the global climate warms, the melting rate of Arctic glaciers continues to accelerate, and the Arctic has successively dug up the bodies of prehistoric organisms, which makes humans feel uneasy. Why do they feel uneasy about the wool rhinoceros that were dug out of the frozen
Why do humans feel uneasy when prehistoric organisms are dug out of the Arctic? Pandora's box is opened?
science
The coastal areas of major cities around the world are facing a crisis that is about to be "swallowed". Continuous sinking has become the biggest crisis facing coastal cities, and being "swallowed" by the waves may no longer be a distant concept. Satellite data in 2022 show that
Ground subsidence is becoming more and more serious, and many cities are sinking, and China may become the country with the greatest risk of subsidence
science
Raj Chety, a famous economist at Harvard University, China Daily, November 3 (Dang Chaofeng) Recently, Raj Chety, a famous economist at Harvard University, pointed out in a speech that the decline of the "American Dream" reflects the fundamental changes in the US economy. He said
"Perspective" Harvard University economist: We live in two different countries, and blacks are facing many obstacles to realizing the "American Dream"
science
#Is it possible that the earth is the highest civilization in the universe# "Cosmic civilization: It may really exist, but do we really know?" Does it really exist? Although the existence of cosmic civilization has not been proven, many people believe in its existence. They may b
Cosmic civilization: It may really exist, but do we really know?
science
Speaking of alien species, many people may only cause a "sensation" if there are any creatures. For example: In 2022, there were rare white fox incidents, although this creature looks mild, and people still breed it. However, after all, it is still an alien species, not a native
More than 11 provinces and cities! "Poisonous flowers" have appeared in many places across the country. How "poisonous" is it? I saw the roots
science
Recently, a yellow flower in Canada has attracted attention. This "plant killer" that was once reported and popularized by major media has once again appeared in some parts of Zhejiang. ↓↓ We have also done related reports before. Why is "this flower" so infamous? "Canadian Yello
One thing is reduced to another! "Canada's Yellow Flower" meets an opponent in Zhejiang, and the Huyang makes great contributions
science
We often use "inseparable" to describe the close relationship between people and shadows. In fact, there is another thing that is closer to us than shadows, and it is time. Time is everywhere around us, filling every corner of our lives, and we can feel the existence and passage
Let’s talk about the nature of time, does time exist? What exactly is it?
science
According to our daily life experience, since the earth has been spinning at high speed, if the helicopter hovers in the air and does not move, it should indeed reach the other end of the earth in 12 hours.
The helicopter hovered in the air and could reach the other end of the earth in 12 hours?
science
There are always people joking about it online. "Your ×× skill was taught by the physical education teacher, right?" It's a joke, but in real life. Roger used to plant corals in the Pacific Ocean.
Planting corals in the Pacific Ocean, Keke Xili photographed Tibetan foxes: This scientist, "teached by the physical education teacher"?
