Zoo's Clues

American newspaper publisher and all-around eccentric, Charles Francis Hall, was an unlikely candidate to become an Arctic explorer. Nevertheless, he made three trips to the frozen north, until he died there under suspicious circumstances. Sharpen your powers of deduction and joi ...  Show more

It started with a messy lab and a mysterious mold. But turning “mold juice” into the world’s first antibiotic would take a sick policeman, a market cantaloupe, and an extraordinary wartime collaboration between scientists, governments, and industry. This is the story of how penic ...  Show more

In 1977 NASA shot a mixtape into outer space, and it remains the only human-made object to have left the solar system. The Golden Record aboard the Voyager spacecrafts contained world music and sounds of Earth to represent humanity to any extraterrestrial civilizations. Alien Lis ...  Show more

Mike Massimino, serving as a NASA astronaut until 2014, has a slew of accomplishments: the first human to tweet from space, the last astronaut to work inside the Hubble Telescope and the speculated inspiration for George Clooney’s role in “Gravity.” He’s now out with a book, titl ...  Show more

Max Pearson presents a collection of this week's Witness History episodes from the BBC World Service. This week we’re looking at the history of space travel, including the 60th anniversary of the first ever space-walk by Russian cosmonaut Alexei Leonov. Also, the speech that woul ...  Show more

We're going to space! Well, actually, we're going to NASA's Jet Propulsion Laboratory in Pasadena to check in with the Voyager team.

It's been forty-six years since Voyager 1 and 2 launched and we're still in contact! We'll talk with Linda Spilker and Suzanne Dodd, who ...