The strength of the magnetic field has been decreasing lately, does this mean that we are about to have a reversal?
Almost certainly not. Direct historical measurements of the intensity of the geomagnetic field have been possible ever since Gauss invented the magnetometer in the 1830's.
At most places on the Earth's surface, the compass doesn't point exactly toward geographic north.
Space weather is the state of the environment in space near the Earth, including the solar wind
Not directly. High-altitude pilots and astronauts can experience enhanced levels of radiation during magnetic storms, but the hazard is due to the radiation, not the magnetic field itself.
This is a question more about health than geophysics; nonetheless, it is a question we are often asked.
The infrastructure and activities of our modern technologically-based society can be adversely affecte