If your dog keeps scratching the entrance door and wandering around the house, tries to hide in the corner, howling and barking - it might be the right time to evacuate. The pup probably knows an earthquake is approaching. If you see the water retreat from the beach really fast - a tsunami must be on the way. Sometime nature is sending us signals we can't read. Learn to understand them to know when natural disasters are on the way to stay safe and protect your dear ones.

It seems that modern science has an explanation for everything that happens around us. But as it turns out, nature has a lot of other tricks up its sleeve like dancing forest on the shores of the Baltic Sea, walking rocks, raining jellyfish, and other amazing things that are so impressive, people often try to provide explanations for them that are far from correct. By the way, some of these strange natural phenomena are really scary. Take, for example, the throbbing hum in Taos, New Mexico that has driven locals wild since the 1990s. The low-frequency hum deprives people of sleep and depletes their energy. Even though scientists have tried to find the source of the hum, they still haven’t pinpointed its origin. Different variations of the hum have also been heard in the UK, Australia, Canada, and other areas of the United States. Luckily, only about 2% of the world's population can hear it.

In the world of advanced technologies nothing can compare with such a unique mechanism as a human body. It's a fine and complicated system and we hardly know everything about it. For example, most people are sure that humans only have 5 senses. But that's not entirely true. Another surprising fact is that your stomach produces a new lining every 6 days to avoid digesting itself. Wow! More unbelievable body facts are coming your way!

Each person is unique. But some of us have features that are extremely rare. For example, there’s an extra set of DNA that gives some people eyes that are different colors - a condition called heterochromia. Other people have the so-called 'Widow's Peak'. Do you wanna find out what it is? Here're 20+ body features that only rare people have.