The first representatives of the human species appeared on Earth nearly 2.8 million years ago. Since then, its population has steadily increased and we are today more than 7 billion people to populate the planet. But all this could end by 2100. Indeed, some experts say that overpopulation, depletion of resources and global warming could be responsible for the disappearance of our species in less than a century. SooCurious takes stock of these very alarming estimates.
Awareness too late
Every year during the G7, governments come together to find solutions to climate change, despite the adoption of certain resolutions such as the significant reduction of global emissions of greenhouse gases, or the limitation of global warming to 2 degrees a year, the results are still far from satisfactory. Moreover the scientist David Auerbach criticizes the last summit of the G7 considering that the heads of the governments did not know how to bring real solutions essential for the survival of the humanity. According to him and some experts, the 21st century civilization faces the same risks as the inhabitants of Easter Island, whose civilization died out when they overexploited the resources of their natural habitat.
This does not only concern the human species, but also that of other living species on the planet. “I think it’s too late. I try not to mention it because some people are working to find solutions but they remain out of reach. At the G7 meeting in Germany in early June, governments failed to come up with a real plan to stop gas emissions for years to come. It has emerged that countries’ current commitments to reduce greenhouse gases will not be able to avoid a spike in emissions by 2030, which will lead to an increase in temperatures of 2.6 degrees by the end of the century. the National Energy Agency.
Ambitions to reach at all costs
“When the G7 called on all countries to reduce carbon emissions to zero in the next 85 years, the reaction was unanimous in science: it will already be too late,” wrote Mr. Auerbach , “To stage, reduce emissions it’s just part of the solution, – the easy part. The other, more difficult will be a very aggressive effort to find the necessary technologies that will reverse the climatic apocalypse that has already begun.
The scientist also pointed out that “dangerous” climate change was already there, and the question now is whether “catastrophic” climate change could be avoided.
The goal now is to increase world temperatures to below 2 degrees by the end of the century. An increase of 5 degrees, as it is currently expected by 2100 (for now), would cause severe flooding, famine, drought and mass extinction. Moreover “Even the figure of 2 degrees implies the rise of more than one meter from the sea level in 2100, enough to move millions of people and make disappear hundreds of islands,” says Auerbach in his article to Reuters. But he admits that the current situation does not allow to hope to go below 2 degrees of increase.
A very alarming climate situation
It turns out that it will get hotter on our planet, and the data on the temperatures of cities in 2100 are extremely worrying. For example in India or South America, daily temperatures will be plus or minus 45 degrees, as will Jerusalem, New York, Los Angeles or Mumbai. In addition the amount of carbon dioxide in the atmosphere will reach 935 parts per million or 0.1% of the atmosphere. It’s almost double today, where the concentration is 400 parts per million.
The glaciers of Everest, Himalayas, pack ice … all these places could be almost completely eradicated by 2100 because of greenhouse gas emissions, according to the warnings of the scientists. A 99% decrease is expected if there is not a clear improvement. But solutions are under study: “NASA’s ambition is to take everything we have learned on our planet from space and create new products that will help us safeguard our future,” says Ellen Stofan , chief scientist at NASA. “With this new global data set, people around the world have a valuable new tool to use in planning solutions to global warming. “
NEX, a global database that predicts climatic variations
The latest NASA (NEX) ground data compiler in California has collected data that shows projected changes around the world in response to rising carbon dioxide levels, which can be viewed on a time-scale by day for each city. NASA says the data will help scientists and better planners understand the risks the planet will face as a result of climate change. It can also enable them to better plan climate hazards such as drought, floods, heat waves and agricultural productivity losses.
NASA continues to produce valuable community data products on the NEX platform to promote scientific collaboration, knowledge sharing, research and development. NEX totals more than 11 terabytes and integrates actual measurements from all locations on the planet with climate simulation data. It provides both precipitation and temperature projections at a resolution of nearly 25 km, between 1950 and 2100 worldwide.
The map shows that many areas of North Africa, India and the Equator will face summer temperatures that will regularly exceed 45 degrees.
At the speed that things are getting worse, in a few generations our descendants might well witness the end of human civilization. At the drafting stage, we are very concerned about all these scientific estimates and we hope that countries will keep their commitments to reduce greenhouse gas emissions. What solutions do you think need to be put in place to save human civilization?