Humanity

How did the pocket wolf go extinct?
The pocket wolf used to be the largest marsupial carnivore that survived into modern times. Although its skeletal structure and physical appearance are similar to those of the gray wolf, and the pattern of its back fur resembles that of the tiger, taxonomically speaking, the pocket wolf belongs to neither the canine nor the feline family, and it is different from any of the extant carnivores in the northern hemisphere. Kangaroo wolves belong to the marsupial order, Kangarooidae. As we know, the wombat (koala), wombat, and various kangaroos living in Oceania are its "close relatives". The reason why the appearance of wolves and tigers is similar to that of wolves and tigers is that they reproduce in a similar natural environment, resulting in the phenomenon of "convergent evolution".
By Richard Shurwood3 years ago in Earth
The global fight against snake bites
"In the monsoon, the fields are overgrown with weeds," says Tukaram Rao, a farm labourer from the village of Rathnapuri in Karnataka, south-west India. "We have to walk out in the midst of those at night to turn on the water pump for the field. Sometimes if the water pipes are disjointed, we walk alongside the water pipe, feeling with our hands to fix it."
By Lonetoft3 years ago in Earth
Living through Ian. Top Story - October 2022.
My home is on Fort Myers Beach but I rode out the storm at my daughter's place in north Fort Myers. I am devastated, grateful beyond words, distraught, happy, sickened, relieved and overwhelmed. We lost so much and we have so much left. Time stands still, and time rushes by. The rollercoaster of emotions rocks you into sleep and back out. We are out of homes and jobs, but we are ALIVE. Barring a couple of acquaintances, everyone has checked in safe and ALIVE. Hence, the happy part. Many cannot say the same. Thinking of those that were not as lucky is the crippling sadness part. So many lives forever changed. So many lost. Lifetimes of treasures and keepsakes gone forever. For tens of thousands of people, memories are all that remain. For thousands of people, anticipation of happy news and fear of bad news still dominates their every thought. There is a strange mixture of hope and rebirth constantly overshadowed by fear, grief and uncertainty. It makes me feel guilty to feel happy and grateful, knowing how many don't get to feel that way right now.
By Bonita L Peterson3 years ago in Earth
Bacterial flagella have an engine-like "motor" on them
Most people are unfamiliar with the world of bacteria because they can not be seen directly by the human eye, but, in the world of living things, the bacteria domain occupies a fairly large category, and the reality is almost everywhere. Many bacteria have a very magical ability, for example, recently scientists have discovered that the flagellum of bacteria has a motor similar to an aircraft engine, its speed is very fast, up to thousands of revolutions per second, amazing or not?
By Stajila3 years ago in Earth
The origin of the invention of the atomic bomb
Why does the atomic bomb have such high energy? I believe this question can be answered by many friends, it is because the atomic bomb uses heavy nuclear fission, but a uranium-235 nucleus fission called barium-141 and the krypton-92 nucleus will lose a little mass, and this lost mass will be completely converted into energy by mass to energy conversion, and the formula is as follows.
By Lu Da3 years ago in Earth
The "monstrous product" of human transformation
If you want to choose the animal world in the bodybuilding champion, cattle in the "Schwarzenegger" Belgian blue cattle will be a popular candidate. Look at the name, it is known that this kind of cattle is native to Belgium, the Belgian blue cattle and ordinary cattle are not the same, their muscular, male cattle can grow to 1.2 tons of weight; and female cattle weigh 0.7 tons.
By Bar wall3 years ago in Earth
Jupiter has larger oceans than Earth
On January 8, 1610, Galileo, using an astronomical telescope of his invention, discovered the four large moons of Jupiter, which are Io, II, III, and IV.
By Stajila3 years ago in Earth
Island snakes 5 times more venomous than land relatives
Like all parts of the world, there are "snake islands" where snakes often impress with their incredible numbers and ferocious habits.
By Sukkning3 years ago in Earth
"Running out of ammunition
In her new book Count Down, Dr. Shana Swan of the Icahn School of Medicine says that declining sperm ratios and changes in sexual development are posing a danger as serious as the climate crisis. If the trend continues, the human race will run out of "ammunition" by 2045.
By Lu Da3 years ago in Earth
Suppose there were no humans, would the universe have any meaning?
I believe that the birth of humans in the universe is accidental. Humans are extremely important to the universe because they can provide answers to many questions like the meaning of life and in a way provide a purpose to it.
By Richard Shurwood3 years ago in Earth
What makes humans so special?
In addition to providing a salty taste, salt plays an important role in human life processes, such as regulating the balance of water in the body, participating in the absorption and transport of nutrients, maintaining the ion concentration difference between inside and outside cells, and the pH balance in the body, among other functions.
By Sukkning3 years ago in Earth
The mystery of "Ghost Air" is solved
The plane hovered at a high altitude, the captain disappeared, and the cabin passengers passed out as if by magic, the flight was therefore called "ghost flight". Such a situation is described to any person listening to the unimaginable. Fortunately, the scientific explanation was clear later, the plane deviated from the course, a lack of oxygen at high altitudes, resulting in the crash.
By Sukkning3 years ago in Earth