A Riverside County family is grieving -- and a local community is stunned -- after a 12-year-old boy suffered a fatal medical emergency during an excessive heat wave last week in Lake Elsinore. | By Mark Hedin, Lila Brown and Edward Henderson A Riverside County family is grieving -- and a local community is stunned -- after a 12-year-old boy suffered a fatal medical emergency during an excessive heat wave last week in Lake Elsinore. On Aug. 29, Yahushua Robinson, a student at Lake Canyon Middle School, allegedly did