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Secrets of the Yucatan Ring

   In the mid-1980s, American archaeologists were scrutinizing satellite images of Mexico’s Yucatan Peninsula when they discovered a pattern that surprised them—a large ring with a diameter of about 200 kilometers and a near-perfect shape.
   Natural water wells are a major tourist attraction in Mexico’s Yucatan Peninsula, and these blue surface potholes are scattered across this arid land. The Yucatan Peninsula is located on the eastern edge of Mexico, and the island is a collection of low, dry forests. But from the air, these natural puddles are clustered together to form a pattern – a semi-circular arc. It was as if someone was using a compass to draw a circle in the Gulf of Mexico, but halfway through the drawing, the arc went over the land and into the sea.
   The cenotes were the source of drinking water for the local Mayans. When archaeologists explored the end of the Mayan civilization that once ruled the peninsula, they found that these natural puddles formed a circle around Merida, the capital of the Yucatan peninsula, and the port cities of Cesar and Pragrosso. In 1988, at a scientific meeting in Acapulco, Mexico, the researchers presented their findings to other satellite experts, who were puzzled by the mysterious distribution of natural puddles.
   A scientist in the audience named Ocampo was a young planetary geologist at NASA at the time. The ring pattern suddenly awakened her scientifically trained intuition.
   Ocampo walked up to the scientists and asked if they had considered the possibility of an asteroid hitting Earth. The impact may have occurred 66 million years ago, and the scars left are still clearly visible today.
   Ocampo’s serendipitous discovery was the beginning of a mutual discussion among the scientific community, laying the groundwork for an eventual consensus. Today, most scientists agree that the ring is a crater formed when a 12-kilometer-diameter asteroid hit Earth. The asteroid crashed into the Yucatan peninsula, turning rocks into liquid in an unimaginably violent explosion.
   Since the early 1990s, teams of scientists from the Americas, Europe and Asia have been working to fill the remaining gaps. They now believe that the impact instantly created a crater 30 kilometers deep. If the Earth is a pond, the asteroid that hits the Earth is a stone thrown into the pond. The rebound in the central area instantly formed a high mountain.
   Today, the center of the impact, where the imaginary compasses were anchored, where the mountain once rose up 66 million years ago, is buried a kilometer below the port of Chicxulub.

   Many people are excited about meeting new people and expanding their circle of friends, but they also run into a hurdle: making friends as an adult is much more difficult than making friends as a child or teenager.
   Anastasia Hronis, a clinical psychologist at the University of Technology Sydney, published an analysis of the research on The Conversation Australia.
   A key element of friendship is trust—trust in yourself and in others. Often, as we age, both of these trusts become more fragile than when we were young.
   We also gradually lose trust in others, because we have probably all experienced the sense of loss that comes with being cheated or even betrayed by a friend.
   Not only that, but the hustle and bustle of adult life often forces us to race against time. This means that sometimes we have to pass up some opportunities to make good connections.
   Therefore, the study concluded that both trust and time are key factors in determining how easy it is to make new friends. Making new friends is a lot easier if you work on improving your confidence and making time in your schedule.
   Heronis has advice for anyone who is troubled: If you want to form a close friendship with someone, you should show your vulnerable side to them at the right time, try to open your heart slowly, and spend at least 10 hours a day. Minutes to meet new friends.

   What’s the loudest sound you’ve ever heard? The sound of firecrackers, construction, a group of people shouting… these sounds are nothing, and the loudest sound in the world can even kill. The unit of volume “decibel” is very special. Every 10 decibels of the sound means that it is 10 times louder than the original sound.
  204 decibels Saturn V rocket
   The Saturn V rocket made its first test flight in 1967, and the volume of the rocket was as high as 204 decibels, enough to knock down nearby buildings. Such a volume would directly kill the astronauts in the spacecraft. Fortunately, the Saturn 5 was conducting an unmanned simulated circumnavigation of the earth. Because of this, the rockets developed by people will be equipped with sound wave suppression systems to ensure the safety of astronauts.
  230 decibel sperm
   whale The sperm whale can be called the loudest animal in the world. Their heads can make a ticking sound with a volume of up to 230 decibels, which is louder than the sound of a ton of explosives exploding. If a human hears such a sound at close range, the eardrum will be directly shattered, and they will die. Sperm whale calls are loud enough to be heard by their companions hundreds of kilometers away.
  280 decibel Soviet Tsar Bomb
   The former Soviet-made hydrogen bomb – “Tsar Bomb” is the largest in size, weight and power of all types of bombs detonated by humans. It was tested in 1961, and the volume at the center of the explosion reached 280 decibels. People from 483 kilometers away could hear the loud noise. The shock wave generated by the sound was enough to flatten the small buildings around it. People near the blast site will die tragically as their internal organs and bones are shattered.
  300 dB Tunguska Explosion
   In 1908, a huge explosion occurred near the Tunguska River in Siberia, Russia. The destructive power of the explosion was amazing, destroying more than 80 million trees within 820 square kilometers. It may have been caused by a meteorite impact. According to the data, the volume of the explosion was as high as 300 decibels, and the sound of this intensity could easily blast people nearby.
  Krakatoa volcano erupts at 315 decibels
   In 1883, the Krakatoa volcano in Indonesia erupted, one of the largest volcanic eruptions in human history, and the event also created the loudest sound ever recorded. The sound produced at the center of the volcanic eruption was as high as 315 decibels, and the volume was so loud that it could be clearly heard by people 5,000 kilometers away. The sound wave circled the earth four times before disappearing. At that time, the eardrums of people who were 64 kilometers away from the volcano were shattered, and the glass of buildings 160 kilometers away was shattered. If someone was on the Krakatoa volcanic island at the time, the shock wave generated by the sound alone might have left them dead in an instant.

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