On this edition of Africa 54: Members of the Guinea military staged an apparent coup, declaring on national television that they had arrested President Alpha Conde, dissolved the country’s constitution, and sealed off land and air borders; Twelve people have died, and thousands made ill in Democratic Republic of Congo after a leak at Angola's biggest diamond mine polluted a tributary of the Congo River; & South Africa's jailed former president Jacob Zuma is placed on medical parole due to ill health.