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Ranking of the world's five nuclear powers
Nuclear weapons are the most powerful kind of weapons nowadays, and many countries are secretly researching continuously in the hope of developing nuclear weapons. Do you know which countries are the five nuclear powers? Only countries that are officially recognized by the Treaty on the Non-Proliferation of Nuclear Weapons as possessing nuclear weapons are legitimate nuclear weapon possessors, and there are only five countries in the world - the United States, Russia, China, France, and the United Kingdom - that are also known as the five nuclear powers. -
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The world's top ten paranormal phenomena
It is believed that science has the power to interpret everything in the world. The fact that man has achieved air flight, researched a cure for a hundred diseases, and so on have made people amazed by the great power of natural science. So what do you know about paranormal phenomena in the world? -
The world's cutest sheep: The Valais black-nosed sheep
Goats are no stranger to us, we are all very familiar with the animals, they are gentle and lovely, in the prairie can often see an endless flock, white they are like clouds in the sky, I believe will leave us a very deep impression, then, do you know what the world's most adorable sheep? This cute thing is the Valais black-nosed sheep, this sheep live in the southwest of Switzerland, the size and ordinary sheep is not much different. This cute thing is the Valais black-nosed sheep, this sheep live in the southwest of Switzerland, the size and the size of ordinary sheep is not too much difference -
The world's only flightless parrot: The owl parrot
In our impression, in addition to ostriches, few other birds have wings but can not fly, the world's only kind of parrot can not fly - owl parrot. This parrot is not like other parrots generally slender and proportionate, the body is too fat in relation to the wings, because its wings are difficult to support the owl parrot flight, so that can not fly into it a great disadvantage -
The world's largest reservoir: Walter Reservoir
Reservoirs are a kind of modern engineering that can facilitate our modern life, they are usually built at the location where there are rivers, or ravines. The world's largest reservoir is located in Ghana and is called the Volta Reservoir, which supports tens of millions of people. -
The world's largest freshwater fish: Stingray. Weighing 300 kg
Cambodian fishermen recently caught a 660-pound (nearly 300 kg) stingray in the Mekong River basin that required more than a dozen people to haul to shore. Researchers say it is the world's largest known freshwater fish. According to scientists, this is the world's largest freshwater fish on record. -
The world's top engine: The Russian NK32 engine
The most reflective of a country's industrial standards in the field of aviation engine manufacturing, the most sophisticated aviation engine, is the military aviation engine, large thrust military aviation engine, representing the highest achievements of mankind in the field of industry, like we see the strategic bomber, it is necessary to use this large thrust aviation engine, Russia has such a world's top aviation engine - the Russian NK32 engine, a screw is not sold, the United States so far can not surpass. -
The world's most expensive flowers: Juliette rose sold for a record price of $26.95 million
Nature has millions of flowers and plants, with a variety of shapes and colors, in recent years gradually become the gift of choice for women, but the variety and planting of different places, the price is also different, then you know what the world's most expensive flower is? The most expensive flower in the world is the Juliet rose, which is said to have been displayed for the first time at the Chelsea Flower Show, where its price tag reached £3 million! -
The world's most primitive peach jellyfish, called "water pandas"!
When it comes to jellyfish, I believe many of you have seen them at the beach. There are various kinds of jellyfish in the world, and the peach jellyfish is one of the most primitive ones. This kind of peach jellyfish was born 550 million years ago, and as of now it still exists in the world, but it is not endangered. Next, you may want to learn more about it together with me! -
The world's fastest flying insects: Australian dragonflies reach speeds of 58 km / h
In the animal world, the fastest animal on land, cheetah is recognized as the first speed, cheetah can reach a maximum speed of 120 km per hour, but in fact many animals can be very fast instantly. Insects belong to the invertebrate group of arthropods. The number of insects is huge and varied, so do you know what is the fastest insect in the world? The fastest insect in the world is the Australian dragonfly. Its flight speed is faster than the ordinary dragonfly and can reach a speed of 58 km/h.