Petra: Lost City of Stone Preview

Season 42 Episode 5

About the Episode

How did early engineers carve tombs into rock cliffs and funnel water to this desert city? Airing February 18, 2015 at 9 pm on PBS

Aired: | Expires: | Runtime: 30s

Inside the Construction of the Statue of Liberty

The Statue of Liberty was one of the most innovative engineering feats of it’s time.

2:59
How Vera Rubin broke barriers in astronomy

Vera Rubin's work provided convincing evidence for a mysterious substance, dark matter.

4:04
What Dating Apps Know About You

You might be collecting matches, but dating apps are collecting your data.

2:51
Sea Change: Survival in the Gulf of Maine Preview

Meet the people leading new efforts to shape the future of the Gulf of Maine and our oceans.

0:30
Sea Change: Peril in the Gulf of Maine Preview

Explore Cashes Ledge - part of the Gulf of Maine that helps power the Gulf’s more than 3,000 species

0:30
Sea Change: Bounty in the Gulf of Maine Preview

Discover the lasting impact of how international trade forever changed the Gulf of Maine’s bounty.

0:30
Sea Change: Survival in the Gulf of Maine

Meet the people leading new efforts to shape the future of the Gulf of Maine and our oceans.

53:30
Sea Change: Peril in the Gulf of Maine

Explore Cashes Ledge - part of the Gulf of Maine that helps power the Gulf’s more than 3,000 species

53:30
Sea Change: Bounty in the Gulf of Maine

Discover the lasting impact of how international trade forever changed the Gulf of Maine’s bounty.

53:30
How A.I. is fighting wildfires

Firefighters are using AI to find wildfires before they explode.

1:34