Worry

"The Earth's magnetic field is showing worrying signs that it is about to reverse again. Not only has the magnetic north pole wandered by 1100 kilometres in the past 200 years, but its strength is dropping at a rate of 5 per cent a century.

This is the fastest decrease since the last reversal 730,000 years ago..."

Don't Worry

Scientists have determined that when the magnetic field of our planet drops to almost nothing during a magnetic pole shift, the sun's solar wind kicks in and replaces it.

"Their simulations show that the solar wind - the million-kilometre-an-hour stream of hydrogen and helium nuclei from the sun - wraps itself around the Earth in a way that induces a magnetic field in the ionosphere as strong as the original field."

From a layman's point of view, my question is:

"Wouldn't the solar wind already be wrapping around Earth, and already be contributing to our magnetic field?