a public setting since he gave up power four years ago because of his declining health. a fthere was almost $3 billion has been raised for haiti, but it has not been spent. about 60% of the country's hospitals collapsed in the cake. thousands of people are still homeless lifting in makeshift tents and tarp shelters. anderson cooper goes one-on-one with former u.s. president, bill clinton. that's tonight at 10:00 p.m. eastern.