Rep. Kat Cammack (R-Fla.) said “imminent death threats” forced the evacuation of her offices on Wednesday, days after she revealed that she suffered an ectopic pregnancy last year.
Lightning lasts for less than a second, is only about as thick as a broomstick but burns hotter than the surface of the sun. CBS News' Dave Malkoff visited a Florida lab that creates its own ligh...