March 3, 2021

Interesting article this morning about a simulation that shows how long the Earth has before we are no longer able to breath on it.

To find that tipping point, the researchers created a simulation of Earth that factored in variables that described the climate as well as geological and biological processes, and most importantly, the activity of the sun. The researchers then ran their simulation to see how the Earth fared far into the future.

The most important take away here is that they are pointing to the sun as being the cause of the loss of oxygen and less towards global warming.

The simulation showed that as the sun grew hotter, 1 billion years from now, releasing more energy, carbon dioxide levels in Earth’s atmosphere will begin to drop due to the gas absorbing the heat and breaking down. The ozone layer would also be burned away. Then, as carbon dioxide levels fall, plant life will begin to suffer, resulting in reduced production of oxygen. Over a period of just 10,000, years, CO2 levels will drop so much that plant life would go extinct. Without plant life, land- and sea-dwelling creatures would soon go extinct, as well, due to the lack of a breathable atmosphere. Meanwhile, the simulation also showed increasing levels of methane entering the atmosphere, speeding the demise of creatures needing oxygen to breathe. The result, according to the simulation, would be a planet without life, save for tiny anaerobic creatures such as bacteria—conditions very similar to Earth prior to the evolution of plants and animals.

100% agree with this. This is one of the rare times that you’ll see scientists factor in the sun to determine environmental issues. Something we have absolutely no control over.