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You Don't Know That? You don't know that the Amazon rainforest, often called the "lungs of the Earth," produces over 20% of the world's oxygen. This vast expanse of greenery is not only a crucial source of oxygen but also home to an incredible array of plant and animal species, many of which are yet to be discovered. You don't know that the human brain has more than 86 billion neurons, each capable of making thousands of connections with other neurons. This complex network allows us to think, feel, and experience the world around us in ways that are still not fully understood. You don't know that there is a species of jellyfish called Turritopsis dohrnii, which can revert back to its juvenile form after reaching sexual maturity. This means it can theoretically live forever, making it one of nature's eternal organisms. You don't know that the world's deepest known point is Challenger Deep in the Mariana Trench, which reaches a depth of about 36,070 feet (10,994 meters). It's so deep that Mount Everest would fit inside it with over a mile to spare. You don't know that there are over 300 million grains of sand on just one beach in Hawaii. The vast majority of these grains are made up of tiny fragments of lava from ancient volcanic eruptions. You don't know that some species of frogs can change their skin color based on their surroundings. This ability helps them blend into their environment and avoid predators. You don't know that there is a type of spider called the golden orb-weaver (Nephila clavipes) whose silk is stronger than Kevlar and could be used to make bulletproof vests or airplane parts. You don't know that humans share over 98% of their DNA with chimpanzees, our closest living relatives. Yet despite this genetic similarity, there are significant differences in behavior and cognitive abilities between humans and chimps. These fascinating facts remind us how much there is still to learn about our planet and its inhabitants. |
