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Meet a member of NASA's astronaut class of 2017

Meet a member of NASA's astronaut class of 2017

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3:26
A look into a Tuvan throat singing ensemble

A look into a Tuvan throat singing ensemble

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5:54
Scientific advancement in the use of artificial lungs

Scientific advancement in the use of artificial lungs

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5:03

Watching out for wildlife

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9:35
In defense of timber rattlesnakes

In defense of timber rattlesnakes

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7:23
Learn about the toughest animal on the planet: tardigrades

Learn about the toughest animal on the planet: tardigrades

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6:41
Making an impact with STEM

Making an impact with STEM

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5:46
A look inside a lab that builds synthetic humans and animals

A look inside a lab that builds synthetic humans and animals

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7:23
Saving the American chestnut tree

Saving the American chestnut tree

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5:57

Fighting drug-resistant cancers with mathematical modeling

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6:39
The genetics behind seahorse pregnancy

The genetics behind seahorse pregnancy

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5:17
The scientific side effects of Superstorm Sandy

The scientific side effects of Superstorm Sandy

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5:47
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SciTech Now

How do plants know which way is up?

Ainissa Ramirez is a scientist, author and a self-proclaimed “Science Evangelist.” She is the creator of a podcast series called “Science Underground.” She joins Hari Sreenivasan to discuss one of her latest podcast episodes about how plants know which way is up.