Senior social isolation: A silent epidemic, as deadly as cigarettes

Study shows marriage habits straying from traditional patterns

U.S. Transportation Secretary reviews Montana bike corridor grant

Houston officials look at options for growing trash problem

Boulder attack suspect appears in court, 118 charges filed

EarthTalk - Which companies and industry sectors stand to profit the most from global warming?

Kansas measles cases at 71 with three hospitalizations

Above-average rainfall leaves Colorado's Front Range drought-free