WASHINGTON, July 10 (TNSres) -- The U.S. Department of Commerce's National Institute of Standards and Technology issued the following news: * * * * Tornadoes are deadly, but until recently there were no building codes designed to protect communities from tornadoes. * Tornado winds push and pull on buildings in unique ways that require special safety designs. * NIST research led to the first building code provision for tornado resilience. * * * Sirens blared across Joplin, Missouri, on a sp  more