Earth's magnetic field may have been weaker billions of years ago

Dear Brad Guth:

On Mar 9, 7:37*pm, Brad Guth wrote:
On Mar 7, wrote:
On Mar 7, 1:02*pm, Brad Guth wrote: On Mar 6, 6:44*am, Yousuf Khan wrote:

Earth's weak magnetic field helped Sun to steal water
from planet's early atmosphere - Oneindia News
"Scientists have discovered that the Earth's magnetic
field 3.5 billion years ago was only half as strong as
it is today, and that this weakness, coupled with a
strong wind of energetic particles from the young Sun,
likely stripped water from the early Earth's atmosphere.

snip link now broken by Google.Groups

Then why are we still in the cycle of losing our
protective geomagnetic force and its
magnetosphere at roughly 0.1%/year?

What is increased, can decrease again.

In other words, either way you don't care.

No, in other words, complete loss and reversal of the magnetic field
has happened many times in history, and does correlate with extinction
events. You don't have to "Chicken Little" on everything do you?

David A. Smith