Stephen Petranek reveals the question that occupies scientists at the end of the day. How might the world end? He lays out the challenges that face us in the drive to preserve the human race. Will we be wiped out by an asteroid? Eco-collapse? How about a particle accelerator gone wild?
Most interesting is the decrease in the earth’s magnetic field that has allowed in more radiation. If the magnetic field has decreased (more) strength by 5% this might partly account for the recent increasing of temperature?