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Carl Sagan

Ivy Mike

What you need to know about modern nuclear war

Conflict

Science Friday host Ira Flatow spoke to three nuclear experts to learn more about what modern nuclear war might look like.

An artist's rendering of a habitable moon orbiting a gas giant planet.

Life beyond Earth? The best bet may be on moons, not planets

Science

NASA shares a family portrait of the inner solar system, starring Saturn

Environment

John Hodgman interviews Neil deGrasse Tyson

Environment

The legacy of Carl Sagan

Environment
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Debate over evolution: Destiny or happenstance?

Environment

Scientists debate whether evolution was a collection of happenstance or if intelligent life was destined to be.

Discovery’s Final Frontier?

Arts, Culture & Media

After today’s landing, the space shuttle Discovery will retire on planet earth. To learn what may be in store for the future of our space aspirations we speak to Louis Friedman and Neil deGrasse Tyson.

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