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Improving Maternal Health

In the year 2000, the United Nations set out to ...

In the year 2000, the United Nations set out to make maternal healthcare a universal right. How far have we come worldwide?

Training for a Nuclear Crisis

Are workers at U.S. nuclear power plants prepared to deal ...

Are workers at U.S. nuclear power plants prepared to deal with earthquakes, tsunamis, and other disasters?

Galileo and the Telescope

Learn why Galileo's early uses for the telescope weren’t so ...

Learn why Galileo's early uses for the telescope weren’t so scientific.

Defining Intelligence: Seth Shostak

Astronomer Seth Shostak thinks that if alien intelligence is out ...

Astronomer Seth Shostak thinks that if alien intelligence is out there, we'll know it when we see it.

Defining Intelligence: Steven Pinker

Cognitive scientist Steven Pinker says that modern human intelligence is ...

Cognitive scientist Steven Pinker says that modern human intelligence is the result of thousands of years of accumulated knowledge.

Defining Intelligence: Nicholas Humphrey

Theoretical psychologist Nicholas Humphrey explains the concept of social intelligence.

Defining Intelligence: Rodney Brooks

Roboticist Rodney Brooks describes what "intelligence" means in his field.

NOVA Minute: The Interaction of Species

Naturalist E.O. Wilson thinks that even today, we're a long ...

Naturalist E.O. Wilson thinks that even today, we're a long way from fully understanding how ecosystems work.

Toward a Smart Electric Grid

Energy expert Vijay Vaitheesaran thinks the U.S. needs to upgrade ...

Energy expert Vijay Vaitheesaran thinks the U.S. needs to upgrade to a "smart" electric grid.

The Risks of Automated Flight

Aviation safety expert Bill Voss thinks airlines should change the ...

Aviation safety expert Bill Voss thinks airlines should change the way they train pilots