[jsanders2001]

> The magnetic field at the time would have only had about 5% of the strength of the field today. This would have resulted in the Earth almost completely losing its protective shield, allowing hard cosmic rays to hit the surface, and greatly increasing radiation exposure.

That sentence has so much hypothetical guesstimation how could anyone take the rest of what they’re saying with any credibility? It reeks of Gorian liberalism for profit.

[JRandomFreeper]

They actually can measure how strong magnetic fields were over time. And we do know how radiation acts in magnetic fields.

If we couldn't, there wouldn't be any such thing as x-ray pictures for doctors.

It's amazing the gifts that God gave us, and the suffering those tools have gotten rid of.

/johnny

[BroJoeK]

jsanders2001: "That sentence has so much hypothetical guesstimation how could anyone take the rest of what they’re saying with any credibility?
It reeks of Gorian liberalism for profit."

from the article: "This is documented by peaks of radioactive beryllium (10Be) in ice cores from this time, recovered from the Greenland ice sheet.
10Be as well as radioactive carbon (14C) is caused by the collision of high-energy protons from space with atoms of the atmosphere."

Science = evidence + logic

[Bigg Red]

Good point.