Play Ship That Changed the World Preview

The Age of Exploration and Europe’s imperial colonization of far-off lands was launched by a revolution in ship design that made long-distance voyages practical. A newly discovered 500-year-old wreck offers vital clues to this momentous innovation.

Play You Could Take a Flying Car to Work Someday

As electric vehicle technology takes off—literally—how will the logistics of air traffic work? Watch how NASA researchers are writing the rules that will make air travel via electric vehicles safe.

Play Great Electric Airplane Race Preview

Can new emission-free electric planes replace our polluting airliners and revolutionize personal transportation in our cities? NOVA takes a ride in some quiet, energy-efficient, prototypes that are vying for success as electric flight takes off.

Play Hindenburg: The New Evidence Preview

80 years after the world’s largest airship ignited in a giant fireball, newly discovered footage sparks a reinvestigation of what exactly caused the Hindenburg disaster.

Play Can Two Men Make a Baby?

Trystan Reese felt grateful that he was able to become pregnant and give birth. But for parents about to transition, there are steps they can take to preserve their fertility.

Play Fighting for Fertility Preview

What causes infertility, and how can assisted reproductive technologies help? Follow the journeys of people navigating fertility challenges from structural inequalities and racism to falling sperm counts, egg freezing, and IVF.

Play Reef Rescue Preview

If oceans continue to warm at the current pace, coral reefs could be wiped out by the end of the century. But scientists from around the globe are rushing to help corals adapt to a changing climate through assisted evolution.

Play Picture a Scientist Preview

Women make up less than a quarter of STEM professionals in the United States, and numbers are even lower for women of color. But a growing group of researchers is exposing longstanding discrimination and making science more inclusive.

Play This NASA Scientist Helps Prevent Mars from Contamination

The spacecraft has to be extremely clean. The entire spacecraft—that includes the rover, the heat shield, the descent stage, and back shell—must contain less than 500,000 bacterial endospores, or spores. Just to give you an idea, a teaspoon of seawater has ten times more bacteria.

Play Why NASA is Back on Mars

This NASA rover landed on Mars, more than 130 million miles from Earth. It’s task? To continue the search for past life on the red planet.

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