Ten years after the end of apartheid, what’s left to document the struggle? For the filmmakers of the documentary “Amandla,” there’s music. In this hour of To the Best of Our Knowledge, the songs that faced down death, despair and terror on the road to equality in South Africa. Also, the...Read more



Scientists are launching one of the most audacious projects ever conceived: a detailed map of the human brain, neuron by neron, synapse by synapse. For some scientists...