Tornado kills 1, causes heavy damage in Colorado   LEAD: Panel recommends forgoing registration of Hiraizumi as World Heritage site+   Obama to stand in for Kennedy at Wesleyan   Panel recommends forgoing registration of Hiraizumi as World Heritage site+   Memorabilia site lowers velvet rope, fights fraud   Petraeus may urge troop cutbacks in September   House panel subpoenas Rove in justice probe   IEA worried about oil supplies, prepares forecast   Record production cannot offset food shortages: FAO   Monitors urged for all with high blood pressure   Gas tops $3.83 as early holiday travelers hit road   US urged to sign on to anti-doping convention before Olympics   Amy Winehouse wins Novello songwriting award   Large tornado causes heavy damage in Colorado   Carbon market could be worth 2 trillion euros in 2020: study   Wildfire threatens homes in rural area of Calif.   Court: Texas had no right to take polygamists' kids   AP NewsAlert   Immigrants fleeing South Africa after deadly attacks   Texas seizure of polygamist-sect kids thrown out