People often ask how I find the time to write so regularly; whether notes, letters, blogs, op-eds, or even books like this. But the reality is I’m always ...

The more than 7200 pages now extant probably represent about one-quarter of what Leonardo actually wrote, but that is a higher percentage after 500 years than t...

Paper is a wonderful technology for the storage and retrieval of observations. Five hundred years later, many of Leonardo’s notebooks are still around to astoni...