HOT AIR BALLOON FLIGHT

How Daniel Ortega tightened his grip on power in Nicaragua

Nicaraguan President Daniel Ortega has had his political opponents beaten and thrown in jail and passed legislation making criticism of the government a form of treason. Sharyn Alfonsi reports on the loss of democracy in Nicaragua.

The MASS model of community-focused architecture

A project in Rwanda convinced a group of Harvard-trained architects to rethink their building methods, material and labor sources, and the end-use of their buildings.

Yuval Noah Harari on the future of the human race

The bestselling author and historian offers his predictions on how technology will alter the evolution of humans and change society.