Plus, how 5 lucky winners can get their hands on both 'Explorer Academy: The Nebula Secret' and the upcoming title 'Explorer Academy: The Falcon's Feather'!

National Geographic's new middle-grade science adventure book from Trudi Trueit arrives March 19th!

In a new installment of "Great Womanizers of the 20th Century," Picasso!

No narration, just nature.

The documentary director also discusses interviewing astronaut Peggy Whitson and the most challenging aspects of constructing the series.

Or "How I Learned to Stop Worrying and Love Outer Space."

But it’s also a mess.

"I think [this project] peels the orange a different way."

The astronaut reveals the training, hardships and spectacle of getting into space -- and what it's like to paint there.

Plus, the reason he dropped out of directing 'The Dark Tower' and the status of the TV component.