The 7 Worst Epidemics in Human History

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Spanish flu

This flu has become the most massive epidemic of all time, both in the number of people infected and in the number of people who died. During the 18 months of the epidemic’s rampage, about 550 million people, or 29.5% of the world’s population, were infected. Of these, 50-100 million died, and thus the mortality rate from influenza was 10-20%. The main reason for the development of the pandemic is post-war disruption and unsanitary conditions, as well as poor nutrition. The epidemic acquired its characteristic name because of the strong outbreak that first appeared on the territory of Spain.

«I’m an Engineer»: 25 Ingenious Inventions of Ordinary People

Obviously, loyal fans of the Crazy Hands section from a popular TV show worked on inventions from today's selection. The genius of the authors of these ideas sometimes crosses the maximum mark, but let's be honest ... Who cares how and from what this or that device is made if it works 100%? We bring to your attention 25 ingenious inventions from the category of "I’m my mother’s engineer"!

7 Most Dangerous Jellyfish in the Underwater World

Jellyfish is a unique underwater creature that is 95% water and only 5% solids. We are accustomed to being surprised at the beauty and heterogeneity of the jellyfish's body, but we often forget that behind the eccentric external appearance there is a huge danger in the form of the strongest poisons that can kill a person in a matter of seconds. In today's selection, we will sanctify 7 of the most dangerous, but rather cute jellyfish, which should not be approached even for the sake of a beautiful photo ...