Inflation, dark matter, and string theory are all proposed extensions to the prior consensus picture. But what does the evidence say?

In the series, guests read aloud questions that pop out from a gumball machine [literally!]. The questions, like “who would you be if you stripped away all of your identities?”, […]

The paper-thin device may also someday be used to stimulate bone growth.

When you mix science with speculation, you get speculation. But the underlying science is still real. Whenever you hear the phrase, “it’s just a theory,” it should trigger alarm bells in […]

How long should one wait until an idea like string theory, seductive as it may be, is deemed unrealistic?