By the time our grandchildren have our own children, we would probably have broken a climate record that has been unchanged for 56 million years.
New research has found that people pump almost 10 times more carbon dioxide to the atmosphere than emitted during the Earth's last major warming event, from the name Palaeocene-Eocene Thermal Maximum (PETM).
If carbon emissions continue to increase in the future, mathematical models predict that we can face a similar PETM event within the next hundred years.
In other words, in the near future, the Earth could be similar to the distant past: a time when the Arctic was not free of ice, which was in crocodile and was removed by trees palm.
"You and me here will not be 2159, but it's only about four generations away," warns the palaeoclimate researcher, Philip Gingerich, from the University of Michigan.
"When you start to think about your children and your grandchildren and your grandchildren, your great guys, you're about them there."
The PETM is often used as a benchmark for current global warming. During this time, rapid climate change has seen the transformation of landscapes, acidic oceans, and stimulated broad stimuli.
It took more than 150,000 years for the world to recover, but what happened, it has nothing that is happening now.
Global temperatures during the PETM reach highlights about 7 degrees Celsius (13 degrees Fahrenheit) are higher than today's average, and we catch up to that height.
The new study suggests that if nothing changes, within 140 years, men could pump the amount of greenhouse gases released during the entire PETM.
"The fact that we can be able to warm up PETM's very fast, within the next hundred years, is terrible," said Larisa DeSantis, a palaeist at Vanderbilt University , which was not associated with the new study.
The reason is terrible because we have taken off the road map. Today, climate scientists use the PETM as a case study for what global warming it could do to plan and when those changes could be expected.
But as useful as this, today, we live in a different world. Although it is believed that the PETM has taken place from a comet or a volcano, our current climate disaster is mainly increased by people, at a rate that can not be seen in the Earth's climate record.
It also occurs in the middle of what should be a cooling trend, in a time when the world is full of different ecosystems and species.
With all these various factors, the new research suggests that using PETM as a meter for current warming may be as useful in the future.
"Given the usual business assumption for the future, the rates of carbon release that are happening today are truly unlike, even in the context of an event such as PETM," said Gabriel Bowen, a geophysicist at the University of Utah, which was not linked to the new study.
"We do not have much in the way of geological examples to draw in understanding how the world responds to such a sort of distress."
He looks like our descendants alone.
This study has been published in Paleoceography and Paleocystatology.