The Tech Behind Mail-In Voting
Season 47
About the Episode
Election officials have braced for an unprecedented wave of mail-in ballots. What safeguards are in place to track individual ballots as they travel to voters and back to the election office?
Aired:
| Expires: | Runtime: 6m 20s
Recent Episodes
-
Episode 18, Season 51<br> Lost Tombs of Notre Dame
Mysterious bodies are found under one of the world’s most famous cathedrals.| 53:40 -
Episode 17, Season 51<br> Building Stuff: Change It!
From electric flight to artificial noses, engineers are finding new ways to preserve our planet.| 53:40
Extras
-
Dino Birds Preview
Fossils reveal how birds survived the killer asteroid and became today’s only living dinosaurs.0:29 -
Extreme Airport Engineering Preview
Follow the race to build a world-class airport on the site of one of America’s busiest flying hubs.0:30 -
-
How Atomic Clocks Keep Perfect Time
Atomic clocks use quantum physics and the resonant frequency of atoms, like cesium, to define time.2:15 -
The Most Baffling Idea in Physics, Explained
Quantum entanglement defies our everyday understanding of reality.3:33 -
What Happens to Your Body During a Speed Eating Competition?
Competitive eaters stretch their stomachs beyond limits. Here’s what happens inside their bodies.5:16 -
Why Hot Peppers Set Your Mouth on Fire
The chemical that makes chili peppers so hot evolved to keep animals from eating the plants.4:02 -
Flight Turbulence Is Actually Getting Worse
It’s not all in your head - flights really are bumpier these days.1:48 -
Hunt for the Oldest DNA: Extended Version
Follow the quest to recover DNA millions of years old for the very first time.1:24:39 -
Lost Tombs of Notre Dame Preview
Mysterious bodies are found under one of the world’s most famous cathedrals.0:30
