Space

You Can't Fall If There's No Gravity

Astronaut Andrew Fuestel has been to space three times. He says he has a mild fear of heights, but he can push through it. He's OK after reaching hundreds of miles above the Earth.

Wrinkling Time To Heal A Family

Showing science's enchanting side has the almost magical effect of opening new portals to what is possible, says astrophysicist Marcelo Gleiser.

The Puzzle Of Quantum Reality

Despite the incredibly accurate predictions of quantum theory, there's a lot of disagreement over what it says about reality — or even whether it says anything at all about it, says guest Adam Becker.