The Economist

COLLEAGUES said he tweeted more than any professor they knew, and Calestous Juma’s tweets covered a swarm of things. Income inequality, and a free-trade area for Africa, you might expect. Those were the subjects he taught at Harvard: getting poorer countries, especially in Africa, to grow and thrive was the obsession of his life.

Read more: https://www.economist.com/news/obituary/21734371-ardent-advocate-innovation-africa-was-64-calestous-juma-died-december-15th