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Posts tagged Carl Sagan

January 9, 2015


a near-Earth asteroid, called Bennu

What’s That in the Sky?

Falling sky debris doesn't pose any real threat. But in the nuclear age, asteroids could trigger war sirens.

July 6, 2012


two male mallards fighting to mate with a female

Sex And Violence

Have you ever stopped to wonder why sex and violence so often go hand in hand?

August 31, 2004


What’s It Like There?

Ever wonder what it's like on other planets? On this Moment of Science, find out what it's like on Mercury.

February 11, 2004


The Lithic Principle

Is it true that if the laws of nature were changed even a little bit, there would be no people in the universe? Find out on this Moment of Science.

September 27, 2003


What’s That in the Sky?

In his book Cosmos, the late scientist Carl Sagan talks about the way in which the earth is regularly struck by material from outer space. These collisions with space debris can be minor–as in a shooting star on a summer night–or amazingly destructive, as in the collision that probably killed off the dinosaurs. Thankfully, the […]

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