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The Microbes We're Made Of

The human body hosts more than ten thousand different kinds of microbes. Most of these bacteria aren't harmful - in fact, many of them actually aid the immune system (2:32)

The Healthy Truth About Traditional Childbirth

When a baby is born surgically via C-section, it may miss out on the health benefits of passing through the birth canal (2:15)

How Do You 3-D Scan a Dinosaur?

Using laser scanners and high-tech computer software, Vince Rossi and Adam Metallo are recreating a digital Dinosaur Hall before it's dismantled (2:36)

Why Do We Cry?

There are three types of tears and it doesn't only happen when you're emotional (2:30)

How to Cook Spinach in Space

Canadian astronaut Chris Hadfield shows how vacuum sealed dehydrated spinach is prepared to eat aboard the International Space Station (1:21)

A Plasma Downpour on the Sun

When plasma falls to the surface it results in a dazzling display known as coronal rain (3:36)

Timelapse Earth

Using footage from the International Space Station, photographer Bruce W. Berry, Jr. created a stunning compilation of our planet (4:08)

Building the World's Largest Ship

In just 76 seconds, watch as construction on the very first Triple-E vessel goes from start to finish (1:16)

Doomsday in Tunguska

Did an asteroid shake the earth 100 years ago, or was it something even more disturbing? (1:52)

The Science of Love

The brain in love looks strikingly similar to one on drugs (2:54)

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