What is aging, and can it be reversed??

Guest" Dr. Jay Olshansky

Will fusion replace oil and give us unlimited power?

Also, did humans originally evolve from fish?

Time travel, is it possible with the known laws of physics?

Is there a God? What does science say about this question.

Guest for Skeptic Society - why do people believe strange things?

We explore black holes, expanding universes, and the frontiers of astronomy, with Dr. Neil Tyson.

Biotechnology - how far can we push science in order to cure diseases and even bring back extinct animals from the dead?

Can science slow down the aging process??

Great inventions. Edison invented the light bulb.

But who will invent the workable quantum computer?

Should we explore the Red Planet?

Guest: Dr. Robert Zubrin