Dr. Edna Greene Medford of the African Burial Ground Project at Howard University in Washington, DC

When it was discovered that there were extensive slave burial grounds in Manhattan in 1991 an extraordinary aspect of American history came to light. For 21st century New Yorkers, the extensive nature of their city's role in the slave trade came as a distinct shock. But the discovery of those graves will now give voices to the silent and assure the memory of those who were so brutally treated in life. Dr. Edna Greene Medford explains how the Burial Ground Project has uncovered their stories.