Centuries' worth of important information is stored on paper – which can decay, burn or get eaten by pests. Peek inside the process of making all that data digital.
Slavery still exists and it happens in plain sight.
Slaves were involved in medical experimentation in the 1700s – both as sources of knowledge and as nonconsenting participants.
The slave trade was used to fund American universities. Scholars are looking to recover the lost stories of the enslaved humans who built some of America's oldest institutions.