CORVALLIS, Ore. — Researchers at Oregon State University have completed a mammoth project to create a 3-D map of electromagnetic energy in the Earth's crust across the continental U.S.

The storm reached a G4 level in strength — the second-highest on the scale, classified as "severe" — just before 11 a.m. Eastern Time.

We hope the grid’s equipped with a sun- screen. Scientists claim we’re not prepared for the solar storms threatening Earth, which could cause cataclysmic blackouts, grid breakdowns and even an ...