How Old Is The Earth Anyway? 4-5 Billion Years?

V

vanzandt

They say reductions in carbon emissions this year will likely be 6%. That's good for global warming right? Mother Nature's fever.

How long has mankind been around? Maybe 100K-200K years tops?

Has anyone ever considered the fact that maybe we're the virus and Covid-19 is the antibody?
I mean... She does have a fever.
...Just a thought. :cool:
 
If you are talking about that long a time scale.

Then our planet can easily handle a bit of man made global warming.

The big five mass extinctions:
  • End Cretaceous, 66 million years ago, 76% of all species lost.
  • End Triassic, 200 million years ago, 80% of species lost. ...
  • End Permian, 251 million years ago, 96% of species lost. ...
  • Late Devonian, 375 million years ago, 75% of species lost. ...
 
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End Permian, 251 million years ago, 96% of species lost

Known as “the great dying”, this was by far the worst extinction event ever seen; it nearly ended life on Earth. The tabulate corals were lost in this period – today’s corals are an entirely different group. What caused it? A perfect storm of natural catastrophes. A cataclysmic eruption near Siberia blasted CO2 into the atmosphere. Methanogenic bacteria responded by belching out methane, a potent greenhouse gas. Global temperatures surged while oceans acidified and stagnated, belching poisonous hydrogen sulfide. “It set life back 300 million years”. Rocks after this period record no coral reefs or coal deposits.
 
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You know the sun will grow to engulf the Earth in another billion making it uninhabitable long before.

You are not a tidy person I expect.
 
Bugenhagen said:
You know the sun will grow to engulf the Earth in another billion making it uninhabitable long before.

You are not a tidy person I expect.
More...

1 billion is a bit too soon for the sun to go red giant:

In about one billion years, the solar luminosity will be 10% higher than at present. This will cause the atmosphere to become a "moist greenhouse", resulting in a runaway evaporation of the oceans. The most probable fate of the planet is absorption by the Sun in about 7.5 billion years, after the star has entered the red giant phase and expanded beyond the planet's current orbit.
 
southall said:
1 billion is a bit too soon for the sun to go red giant:

In about one billion years, the solar luminosity will be 10% higher than at present. This will cause the atmosphere to become a "moist greenhouse", resulting in a runaway evaporation of the oceans. The most probable fate of the planet is absorption by the Sun in about 7.5 billion years, after the star has entered the red giant phase and expanded beyond the planet's current orbit.
More...

Yes, memory bad there of a NASA video. The planet will be uninhabitable in a billion, engulfed significantly after that and Mars then in the habitable zone.

Still, why not just trash it now.
 
southall said:
End Permian, 251 million years ago, 96% of species lost

Known as “the great dying”, this was by far the worst extinction event ever seen; it nearly ended life on Earth. The tabulate corals were lost in this period – today’s corals are an entirely different group. What caused it? A perfect storm of natural catastrophes. A cataclysmic eruption near Siberia blasted CO2 into the atmosphere. Methanogenic bacteria responded by belching out methane, a potent greenhouse gas. Global temperatures surged while oceans acidified and stagnated, belching poisonous hydrogen sulfide. “It set life back 300 million years”. Rocks after this period record no coral reefs or coal deposits.
More...
As long as you realize... I have no effing clue.
I was just typing and being cute on a Saturday morning.
Blame it on Foldgers.
 
Ignore anything science predicts about the future or the past. 200 years ago the universe was only 20 million years old according to science. When I was a kid, the universe was only 10 billion years old. Now its 13.8 billion. The universe will probably be 20-30 billion years old when your kids are grown up. The goal post always moves when predicting this stuff and it's pretty much a fact that they'll have to move the goal post again soon if they ever want to explain the cambrian explosion.
 
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