Bill Gates is right: the private sector is stifling innovation in green energy. But that's not the only place capitalism is holding us back.
Leonard Nimoy's passing reminds us of the spirit of wonder and discovery represented by Spock and the Star Trek series.
Democracy isn’t a barrier to solving global issues like climate change. It's humanity’s best hope.
Ebola is a problem that will not be solved, because it isn’t profitable to do so.
Maintaining a private pharmaceutical sector represents a significant public health risk. One solution is complete nationalization.