How many people on the planet and on what does it depend on?

The question interesting a considerable number of the population from children to the elderly: "How many people on the planet?" Of course, it's impossible to answer with one hundred percent accuracy, because every minute someone in the world is born and someone dies. It is estimated that in 2012, a seven-billion-strong man on Earth was born from nowadays, therefore, the answer to the question of how many people on the planet are now - more than seven billion.

A bit of history

Forty thousand years before our era, about forty billion people were born, and in the 1990s, about fifteen billion. In 1900 there were no more than two billion people on Earth, and in 1950 there were more than two and a half, in 2005 - more than five. As we can see, the population began to grow intensively only 120 years ago.

On what depends, how many people on the planet

During illnesses and epidemics a huge number of people died. For example, from the plague from 1346 to 1352 gg. Bubonic plague, Great sea, black death - they called this terrible disease. It destroyed a quarter of the world's population. Black pox - one hundred thousand people died from it. This disease spared no one. The outbreak stopped only after vaccination. Acute intestinal infection - cholera - claimed the lives of more than forty-three million people. Typhus, accompanied by a mental disorder against the background of fever, claimed more than three million lives. From malaria, tropical fever a year, up to three million people die. From AIDS, more than forty million died, "the plague of the twenty-first century" is the second name of the virus. We see how many people on the planet have died and continue to die from various diseases.

Until the twentieth century, most people neglected hygiene procedures. Consequently, infections developed, immunity weakened, and life expectancy decreased. Only the rich could use soap. Those who still followed the purity (there were not many of them), but did not have the opportunity to buy soap, used various tinctures on ashes and cleanings.

The lack of medicines also affected how many people on the planet Earth could live. Antibiotic, the strongest antimicrobial drug, was discovered in 1928 by Alexander Fleming. For this discovery, he received a Nobel Prize. Later, antifungal agents and antiviral drugs appeared. Today we can go to the pharmacy and buy a lot of medicines, and only a hundred years ago our ancestors could be treated only with herbs, and that is not always the case.

The medicine took a step forward: operations, organ transplantation, the appearance of various drugs to support the vital functions of organs - all this allowed to increase the life expectancy of the population.

During the formation of states, there were many wars for territories. During the Second World killed more than fifty million people, in the First - more than twenty-five million. In the whole history of the world, about 15,000 wars have passed, and more than three and a half billion people have died.

How many people on the planet depend directly and on how many are born. One hundred and fifty years ago, there were seven deaths per ten newborns. With the advent of maternity clinics, qualified care of doctors, the death rate of newborns has decreased thousands of times.

All these factors have influenced and continue to affect the population of the Earth. According to scientists, by 2050 there will be more than eleven billion people on the planet.