This edition is archived.

Energy economist lectures at Carnegie Mellon

Last Wednesday, energy economist, Peter Tertzakian, gave the keynote speech for "Focus the Nation."

How Things Work: Optical illusions

Learn the science behind some common optical illusions.

Health Talk: The chemistry behind love

A host of mechanisms in the body are responsible for that wonderful feeling called "love."

Sci/Tech briefs

Google has created a new wireless tracking system that will enable people to share their location in 27 different countries.

Health Line

Scientists have now found a way to grow neurons on silicon chips.

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