As the world’s powers turn away from the continent, Kwame Nkrumah’s vision for Africa may hold the key to realizing its potential today.

As the world’s powers turn away from the continent, Kwame Nkrumah’s vision for Africa may hold the key to realizing its potential today.

Readers respond to a front-page article about organ transplants and risks to donors. Also: Burning contraceptives; photo memories.

“We were suckers of the global system for so long.”