Millions of Americans are teetering on the brink of poverty, according to a new report from Prosperity Now that says 40 percent of all U.S. households – and 57 percent of households of color – could be knocked over the edge by one unexpected medical expense, lost paycheck or job loss. That financial instability is mirrored in housing insecurity, and, while homelessness in Atlanta is on the decline, Fulton County remains by far the highest among the national benchmark counties , according to the