Click here to read Understanding Pathways of Calorie Restriction: A Way to Prevent Cancer? in the April 2008 issue of JNCI.
The Cosmic Origin of Our Water
Without water, there would be no life on Earth, but the origin of our planet's water remains a mystery. In "Where Did Earth's Water Come From?" I outline some of the surprising possibilities for our water source.
Solar Impact
In the award-winning "Solar Impact," I outline what scientists know about the mysterious ebb and flow of sunspot cycles and how these changes may have influenced Earth's climate.
Life’s Little Mysteries
I am a contributor to Life's Little Mysteries, a website dedicated to answering questions about the world. I am also a contributor to the Life's Little Mysteries, available on Amazon.
Flexible Robotic Hands
Rigid, metal robotic hands are not suited for the unpredictability of the real world. In Tech Review I outline an inventive way roboticists are creating plastic, versatile hands.
Social Robots That Learn
Robots will need to be able to adapt and learn to interact with people. In this Tech Review article, I profile "Simon," a robot learning how to take cues from people by watching and imitating actions.
