NOVA last week was on the sun and predominantly about sun spots, CME's,
etc. Per the sun forecasters an event such as 1859 is not an "if" but a
"when".
The main fear they have is that electric transformers world wide would
be destroyed. Electric co's do not have replacements lying around and
the larger transformers would take years to replace across a large system.
--
"A person with a new idea is a crank until the idea succeeds."
-Samuel Clemens.