Were German scientists during World War II working with the Nazi Party? Can scientists be war criminals?

Can science complete Einstein's dream of creating an equation that can unify the universe? Perhaps string theory is this fabled theory.

Is time travel possible?

We explore the boundary of science and politics with Professors Steven Pinker and Daniel Dennet.

Guest: Michael Shermer of the Skeptics Society, who debunks fake science.

Can astronauts explore Mars?

Guests talk about (a) the Big Bang and origin of the universe (b) how DNA can help us retrace the origin of the human race.

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?