I’m not even going to ask how they know something like this because I wont believe any answer given...
I’m not even going to ask how they know something like this
We forget what a theory is and they don’t mention it. It is presented as fact. There is some evidence, enough for questions.
But we started to wear clothes to protect from radiation?
Comes from geology. Magnetic material in sedimentary and basaltic (lava) layers align themselves in the direction of the magnetic field - just like how a compass works.
The more of that you see, the stronger the field.
It’s also how they know that the direction of magnetic north has shifted over the millennia.
Requires thin slices, microscopes, and knowing the age of the material you’re dealing with.
If a volcano erupted during this time the polarity of the lava flows can be measured as the position of north and south would be frozen at that time.
As soon as you reach this: “Using advanced computer modeling, the research team reconstructed Earth’s magnetosphere ... around 40,977 years ago,...” - you can safely stop reading.
The lesson is don’t go around naked. Wear clothes.