Science

"Spiral" flying objects appear? U.S. to hold 'UFO hearing'
It seems that there has been no news about UFOs for a while. Have UFOs disappeared? In fact, the so-called UFO is not necessarily a flying saucer from an alien planet. Some unknown natural phenomena or artificial flying objects may be mistaken for a UFO.
By adalberto alejandrina3 years ago in Earth
Scientists are terrified of the situation of the US Mars helicopter
Although Mars also has an atmosphere, the density of Mars' atmosphere is very low, only about 1% of that of Earth, which means that the air on Mars is very thin, and we can't breathe if we stand directly on the surface of Mars. It is also because the atmospheric density of Mars is very low that it is more difficult for those rotorcraft to take off on the surface of Mars. Not only the take-off weight of the rotorcraft will be limited, but also the rotational speed of the rotor is very high.
By sondra mallen3 years ago in Earth
Alien spaceship coming? 3 metal balls come to India
Whenever there are some flying objects or other phenomena in the sky, some friends may guess whether an alien spacecraft has visited the earth. Judging from the previous sightings, many flying objects were only photographed, and these photos were blurred, and it was impossible to see what the flying objects in the photos were, let alone be able to touch them. Flyer too. Even if we have access to these flying objects, we may not necessarily be able to reveal the truth about these flying objects.
By Vicky3 years ago in Earth
How fierce is the world's "king of all horses"?
As the saying goes: "A thin dead camel is bigger than a horse", in many people's opinion, even if a camel is smaller, it is still bigger than a horse. But that's not necessarily true!
By Baudamolova3 years ago in Earth
The reason why early humans wore clothes maybe even more interesting!
Have you ever wondered why humans are the only ones who wear clothes when there are more than a million species of animals on earth?
By Deljewitzki3 years ago in Earth
Nuclear radiation residue in the sand and dust? Where does it come from?
Since March 15, strong winds have been blowing in the African Sahara Desert, and violent dust storms have not only hit Spain, Portugal, France, Switzerland, and other places but even spread to the more northerly United Kingdom. Many European cities throughout the sky turned orange or even blood, as if in the science fiction film Mars, buildings, roads, and vehicles were covered with sand and dust, and the air was seriously polluted, filled with the smell of sand and dust. At a ski resort in France, the snow-white snow field turned into "dirt slopes". The mountains near Madrid, Spain, white snow with a red tinge.
By Fei Fei3 years ago in Earth
Face palsy fox misanthropic face, rely on the face of the low go red
Recently, a conservationist captured images of five wild Tibetan fox cubs moving around in Lilian Mountain National Park in Gansu! The young Tibetan foxes, whose faces are not yet so square, are very cute and play around in the grassland with a lot of camera sense!
By Apostolakis3 years ago in Earth
Why humans lost their "dingbats" during evolution？
At the end of the penis in most male mammals is a unique bone - the penis bone, also known as the dingus, which is a bone that is independent of the skeleton and not attached to other bones in the body, but hangs subtly at the end of the penis.
By Baudamolova3 years ago in Earth
48 dogs smoked 100 cigarettes a day to prove that smoking is harmless
Tobacco, the raw material of cigarettes, is a plant native to South America, as early as in the primitive stage of human society there is the behavior of chewing tobacco, Indians are the earliest smokers. 15-century European explorer Columbus in the discovery of the "New World of America", found that smoking tobacco in the Americas has been quite common. found that smoking tobacco in the Americas has been quite common, then tobacco was brought back to Europe, and was widely spread, and gradually spread around the world. The way people smoke tobacco, experienced from chewing tobacco, snuff, cigars, and pipe tobacco to the later cigarette.
By Deljewitzki3 years ago in Earth
The fearful snake, why the cat is not afraid?
When it comes to snakes, many people are scared and have goose bumps, in fact, the fear of snakes is engraved in the genes of humans, from the "genetic memory" of early humans.
By Fei Fei3 years ago in Earth
How to save yourself from the "man-eating" offshore currents?
On the afternoon of July 31, two young tourists were swept away by a wave and disappeared into the sea in Qingdao, Shandong Province. The video released by citizens shows two young guys watching the sea and taking photos on the dike outside the guardrail, when a wave kept coming over, then a huge wave knocked them both down and swept them into the sea. One of them had fought to climb to shore, but was soon dragged into the sea again by the waves and disappeared. The scene was heartbreaking to watch.
By Apostolakis3 years ago in Earth
Are the November climate and sustainability summits going to deliver on the promised green investment?
We are just a few weeks away from 2022 United Nations Climate Change Conference, more commonly referred to as COP27. This year, the 27th global summit takes place in Sharm El-Sheikh, in Egypt from November 6 to 18. This is the second time a Middle Eastern country hosts one of these summits. Morocco hosted COP22 five years ago.
By Andrea Zanon3 years ago in Earth