The Big Ideas: What Is Reality? Effective theories in physics can help us measure and examine reality, despite the many things we do not yet know. By Lisa Randall Dr. Randall is a physicist. This ...

Interpretations In his new book of essays, David Kaiser explores quantum physics from a scientific, historical, economic and philosophical standpoint. (Courtesy: iStock/Pobytov) Both a physicist and a ...

Now there is a conundrum we can struggle with in the dead of night. But it is one that Brian Greene is actually equipped to try to answer in his latest book, Until the End of Time. Greene, director of ...