In this 8K video about planet Earth, we'll see the best places with the real sounds of nature. A Dalhousie University study says there are 8.7 million species on the planet, of which 86% have yet to be discovered. Contrary to popular belief, the Great Wall of China cannot be seen from space, but you can see the pollution of its capital Beijing. The Earth is 150 million kilometers from the Sun, so it takes 8 minutes 19 seconds for sunlight to reach the planet. The speed of the Earth's rotation decreases by 17 milliseconds every 100 years, so in about 140 million years the duration of the day will be 25 hours. 70% of the surface is covered by water. Of all the liquid on the planet, 97% corresponds to salt water and 3% to ordinary water; but of this, only one third is available for human consumption because the rest is frozen. Since the Earth's revolution around the Sun is not 365 perfect days, but 365.2564 days, we have leap years. But those 366 years are not every four years, but every four years that are not divided by 100, although they are divided by 400. The speed at which the Earth rotates is about 1600 kilometers per hour. And the one that revolves around the Sun is 107,826 kilometers per hour.