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Green Light
Dr. Marc Zimmer
Using a molecule that makes creatures glow green, Marc Zimmer shows his students that chemistry can be cool. He also enlists his family pets—mice and fish that can turn a rainbow of colors.

Special Delivery
Dr. Lola Eniola-Adefeso
Lola Eniola-Adefeso takes aim at a top killer—heart disease—with microscopic plastic beads. These beads will deliver medicine in a controlled way to blood vessels.

Just Found
This Yellowstone hot spring-fed creek is green because the arsenic-eating algae have formed a thick mat. Courtesy: Tim McDermott
Read about the body's inner clock, why we sleep, arsenic eating algae and more...

This page last reviewed on May 18, 2011