Youth obesity weighs heavily on Tech's heart By JOHN DAVIS AVALANCHE-JOURNAL Confronting the "silent threat" of childhood obesity will be the first order of business for the Healthy Lubbock Initiative, Dr. M. Roy Wilson's vision for making Lubbock the healthiest city in Texas. Wilson, the new president of Texas Tech's Health Sciences Center, spoke Monday to about 125 people from Lub bock's health, academic, religious and business sectors about his views on children and obesity. "Your presence here today means a lot," Wilson told the audience. "You are committed to what we want, which is to make the quality of...