Whenever you take a glance around you, you will see life almost everywhere on Earth. And Earth seems quite exquisitely caring for life. We can see it in the air, water, land, soil, etc. But the question arises what is inevitable? We are well aware that there have been mass destruction events that happened in the past, hence some of them taking out the life of the majority on Earth. Although, since life got its start and spread over the globe, there has not been any event that can completely eradicate life. We would not be here to contemplate it. But still, the phenomena is very interesting. Despite some grave incapacitating brief and temporary events, Earth’s climate strived to remain stable for 3-4 billion years.
And that is also very bizarre. As we are well familiar with the process that stars like the sun tends to grow hotter and that long ago the Sun was approximately 30% fainter. That either depicts that the old Earth should have been frozen rigid, or pretentious that it was clement that the Earth should be boiling now. And of course, neither the presumption is true which can prove itself to be accurate. This whole progress is termed to be “the Faint Young Sun Paradox” that has motivated many scientists to assume that the Earth is having a kind of thermostat, to help it set conditions that rebalance a system when it gets too hot or too cold. This could be a negative feedback system because if conditions arise too much and Earth heats up, the things will alter in a way to cool it back.
However, we know that positive feedback conditions exist too. For instance, if you release too much Carbon Dioxide into the air, oceans will warm up and will ultimately release more and more Carbon Dioxide, thus giving you a feedback loop that will have a worse ending then. This is what we are facing now. If Carbon Dioxide gets too little in the air, the Earth will get frozen solid.
The result is just that we are lucky enough that our environment tends to remain stable against all those actions. As much as you can contemplate the inevitability of the Earth, you will get the answer that apparently, some fortunes strive to favor the prepared planet.
Although human beings have a lot of issues, still we do not go extinct. The Earth may be vigorous, but we are not.
