The Astonishing Elements of Life
Each of the millions of chemical compounds, made from the 100 different building blocks, the elements, has its own unique properties. Even simple molecules like water, show evidence of being designed for life.

The Big Ideas in Science
What would you include if asked to list the ten ideas in science most useful in explaining the maximum number of phenomena?

The Mystery of Life's Origin
Explaining the origin of life is a special problem in science, because we are dealing with unique and unrepeatable events, and we don't have the usual empirical evidence, since no observers were present.

Presuppositions of Scientists
A presupposition is an expectation assumed or taken for granted.  Some scientists hold presuppositions that should be challenge.

What Did Einstein do?
A student once asked me, “What did Albert Einstein really do?” Well, here’s a short version of what should actually be a long answer.

The Big Names in Science
Our present understanding of the nature of the universe is possible because of a tremendous legacy from some of the famous names in science. As a physical scientist I think of the many important people from the mid-1920's who developed the quantum theory.