Elon Musk is regarded with hero worship status by many, yet he has made a plenitude of strange pronouncements, most doomsday, not that that in itself is bad, since even on a good day, I make doomsday statements even before breakfast, let alone second breakfast, or brunch. What is problematic is he thinks terra forming Mars is the answer to the anatomy of human destructiveness. But, if Earth 1.0 goes, so will Earth 2.0 as well, same causes, different planet!
https://www.thesun.co.uk/tech/13991624/elon-musk-warns-humanity-self-extinguish-mars-colony/
“ELON Musk has warned that humanity may wipe itself out before his aerospace company SpaceX has a chance to colonise Mars.
In an interview on Monday, the billionaire warned that we face imminent threats of extinction from supervolcanoes, comet strikes or a "giant war".
If World War 3 were to break out, there is a "low" chance of building a self-sustaining city on Mars afterwards, he added.
The Tesla CEO, 49, described his long-standing plans to colonise the Red Planet by 2050 using rockets built by SpaceX as a "great adventure",
Speaking at the 2020 Mars Society Virtual Convention, he said: "I think it’s helpful to have as the objective the creation of a self-sustaining city on Mars.
"This has to be the objective, not simply a few people or a base, but a self-sustaining city."
Musk has stated on numerous occasions that humanity must colonise Mars and become an "interplanetary species" to save itself from extinction.
He has previously listed nuclear warfare, killer robots and even the incineration of Earth as it is engulfed by the Sun as threats to our species.
Speaking on Monday, the South African highlighted that one of the biggest challenges facing a Martian colony is whether or not it could survive if Earth were to stop sending supplies.
"The acid test really is if the ships from Earth stop coming for any reason, does Mars die out?" Musk said during the live-streamed interview.”
Still in the long term of one billion years, Earth is doomed, but it is so long it does not matter. According to the theory of evolution, humans would have devolved into mushrooms by then, being kept in the dark, and fed on bs for most of their existence! So, it will not matter.
https://www.nature.com/articles/s41561-021-00693-5
“One billion years from now, Earth’s atmosphere will contain very little oxygen, making it uninhabitable for complex aerobic life.
Today, oxygen makes up around 21 per cent of Earth’s atmosphere. Its oxygen-rich nature is ideal for large and complex organisms, like humans, that require the gas to survive. But early in Earth’s history, oxygen levels were much lower – and they are likely to be low again in the distant future.
Kazumi Ozaki at Toho University in Funabashi, Japan, and Chris Reinhard at the Georgia Institute of Technology in Atlanta modelled Earth’s climatic, biological and geological systems to predict how atmospheric conditions on Earth will change.
The researchers say that Earth’s atmosphere will maintain high levels of oxygen for the next billion years before dramatically returning to low levels reminiscent of those that existed prior to what is known as the Great Oxidation Event of about 2.4 billion years ago.
“We find that the Earth’s oxygenated atmosphere will not be a permanent feature,” says Ozaki.
One central reason for the shift is that, as our sun ages, it will become hotter and release more energy. The researchers calculate that this will lead to a decrease in the amount of carbon dioxide in the atmosphere as CO2 absorbs heat and then breaks down.
Ozaki and Reinhard estimate that in a billion years, carbon dioxide levels will become so low that photosynthesising organisms – including plants – will be unable to survive and produce oxygen. The mass extinction of these photosynthetic organisms will be the primary cause of the huge reduction in oxygen.
“The drop in oxygen is very, very extreme – we’re talking around a million times less oxygen than there is today,” says Reinhard.
The researchers also estimate there will be a coinciding increase in methane to levels as high as 10,000 times the amount in the atmosphere today.
Once the changes in Earth’s atmosphere begin to occur, they will progress rapidly: the team’s calculations suggest that the atmosphere could lose its oxygen over the course of just 10,000 years or so.”
In such a world, one would be justified in saying: “I can’t breathe!”