Why is it so difficult for us to do those things we know we should? Here's a talk I gave at Stanford Medical School as part of their MedX series.
Watch an experiment in which we studied time perception by dropping volunteer subjects from a 150 foot high tower. Free fall.
Watch a talk I gave at the Long Now Foundation about my hopes that the advent of the internet will mitigate threats that brought down previous civilizations.
What a wonderful shot of caffeine it was to find my childhood hero lauding my book in the New York Times.
Interested in issues of memory and the brain? Watch a clip of David on the History Channel.
David has won the Science Educator Award from the Society of Neuroscience.
Read David's Op-Ed piece in The New York Times regarding time and Obama's withdrawal plan.
Barnes and Noble selected SUM as one of the Best Books of the Year.