No demographic data exist for more than 99% of the span of human existence. Still, with some assumptions about population size throughout human history, we can get a rough idea of this number: About 117 billion members of our species have ever been born on Earth.
If we add the number of people alive today, we get 117 billion humans that have ever lived. This means that for every person alive today, there are approximately 14 people who are no longer with us.
1000 years BCE the world population was 50 million people. 500 years BCE it was 100 million, and in the year 0 around 200 million people were estimated to live on Earth.
Not even close. It is estimated that in 50,000 years of human history, more than 100 billion (in the American sense of billion as a thousand million) human beings have been born. Most estimates run somewhat higher. There are fewer than 6.4 billion alive today.
From 1 million humans in 10,000 B.C., all the way to 7.02 billion. The journey of our kind on Earth, all in numbers! By 10,000 B.C., the world's population was around 1 million. 2,000 years later there were about 5 million people on Earth—the same number that live in Finland today.
How Human Beings Almost Vanished From Earth In 70,000 B.C. : Krulwich Wonders... By some counts of human history, the number of humans on Earth may have skidded so sharply that we were down to just 1,000 reproductive adults. And a supervolcano might have been to blame.
We know that life began at least 3.5 billion years ago, because that is the age of the oldest rocks with fossil evidence of life on earth.
The global number of deaths per day is around 150,000 deaths. The number of deaths per day varies depending on various factors such as natural disasters, accidents, illnesses, and violence.
In the United States in 2019, the death rate was highest among those aged 85 and over, with about 14,230 men and 12,666 women per 100,000 of the population passing away. For all ages, the death rate was at 911.7 per 100,000 of the population for males, and 829 per 100,000 of the population for women.
Heart disease is the leading cause of death for both men and women. This is the case in the U.S. and worldwide. More than half of all people who die due to heart disease are men. Medical professionals use the term heart disease to describe several conditions.
Earth's capacity
Many scientists think Earth has a maximum carrying capacity of 9 billion to 10 billion people.
The First Humans
One of the earliest known humans is Homo habilis, or “handy man,” who lived about 2.4 million to 1.4 million years ago in Eastern and Southern Africa.
Adam is the name given in Genesis 1-5 to the first human. Beyond its use as the name of the first man, adam is also used in the Bible as a pronoun, individually as "a human" and in a collective sense as "mankind".
Apply the same concept to the whole of human history then - that we're not witnessing humanity at its birth nor its death right at this moment - and while results do vary, we can say that our species will die out at some point between 5,100 years and 7.8 million years in the future.
The first human ancestors appeared between five million and seven million years ago, probably when some apelike creatures in Africa began to walk habitually on two legs. They were flaking crude stone tools by 2.5 million years ago. Then some of them spread from Africa into Asia and Europe after two million years ago.
But how long can humans last? Eventually humans will go extinct. At the most wildly optimistic estimate, our species will last perhaps another billion years but end when the expanding envelope of the sun swells outward and heats the planet to a Venus-like state. But a billion years is a long time.
Between ages 15 and 40, death rates for men are usually two or three times higher than death rates for women. This disparity has fueled widespread interest in the ratio of male to female death rates over the life course and in why it is exceptionally high for younger adults (1–6).
In 1900, pneumonia and influenza were the leading causes of death, with around 202 deaths per 100,000 population. However, in 2021 pneumonia and influenza were not among the ten leading causes of death.
There is a clear tendency for the lowest annual risk of death in children and young adults, with greater risk for the very young and very old. By the time we are over 65-70 years (depending on sex), we have at least a 1 in 100 chance of dying in the next years, rising to 1 in 10 over 85 years.
Cardiovascular diseases are the leading cause of death globally. The second biggest cause are cancers. In this section you can see the causes of death for all countries in the world.
World Death Clock - World Death Clock is a dynamic clock that calculates the number of people who are dying in the world every second. On an average there are 56 million deaths that take place in a year.
Humans (Homo sapiens)
It's a cliche, but (aside from mosquitos) the most deadly animal is ourselves! Homicides account for an estimated 431,000 human deaths a year, making us by far the deadliest mammals.
The earliest time of the Earth is called the Hadean and refers to a period of time for which we have no rock record, and the Archean followed, which corresponds to the ages of the oldest known rocks on earth. These, with the Proterozoic Eon are called the Precambrian Eon.
The earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old. The signals consisted of a type of carbon molecule that is produced by living things.
Millimetre-long placozoans were among the earliest animals to emerge, yet they could feed, digest, reproduce, and move around the ocean floor. Their structure is like a sandwich, with two outer sheets of cells and a liquid filling supported by structural fibre cells.