May 16, 2014

9:30

Remembering Nereus, Explorer of Ocean Depths

The robotic deep-sea submersible Nereus was destroyed while diving over six miles beneath the surface in the Kermadec Trench.

Segment

12:08

Scientists confirmed a West Antarctic ice sheet the size of the Dakotas is melting.

Segment

11:12

World health experts will meet to discuss whether or not to destroy the last live samples of smallpox virus.

Segment

23:23

"Prisoners, Lovers, & Spies" tells the story of invisible writing, from lemon juice to microdots.

Segment

12:00

A "brain stethoscope" turns seizure patients' brainwaves into music.

Segment

24:21

Graphene is stronger than steel and more conductive than copper—a look at the applications and limitations of this "wonder" material.