Some physicists and philosophers would say no, time is an illusion; time is not real. How can that be? Is our sense of time all wrong?
I was named a CNN Next List Fellow. Watch two clips from the show.
The days of thinking of time as a river—evenly flowing, always advancing—are over. Time perception, just like vision, is a construction of the brain.
I posted before about my scanning of a 3,000 year old mummy, Neskhons. Now, by analyzing the data in several different ranges of electron density, I've found something unexpected: inside the mummy's torso are 4 small funerary amulets.
Hear actress Emily Blunt read the story "The Cast" from Sum.
In September, 2009, Sum became the number 2 book in the United Kingdom on Amazon's bestseller list, only behind Dan Brown's Lost Symbol.
David has won the Science Educator Award from the Society of Neuroscience.
Sum was the only book of fiction in New Scientist magazine's selection of Best Books of 2009.