BISMARCK, N.D. (KFYR) - Last week was Severe Weather Awareness week, which covered topics from severe thunderstorms to tornadoes to extreme heat and fire danger. One question that may remain is: How ...

How do harmless puffy white clouds grow into towering, potentially dangerous cumulonimbus thunderstorms? On their surface, clouds appear to be an odd contradiction of nature — light enough to float on ...