Life Science

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37:39

Using Living Cells to Make Biological Robots: MIT Engineer Ritu Raman on Her Pioneering Work

Can biological robots be used to benefit society without inviting dystopian scenarios commonly portrayed in science fiction? Ethicist and Philosopher Insoo Hyun asks this big question to mechanical engineer Ritu Raman.
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under 1 minute

How Comic Books Inspired A Bioengineer’s Work

What if robots could be powered by muscles and biology?MIT Mechanical Engineer Ritu Raman has taken inspiration from comic books and has applied it to her research into engineering materials that are powered by living biological cells.
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Under 1 minute

The Real Reason Cilantro Tastes Like Soap

Have you ever wondered why some people adore cilantro's fresh flavor, while others liken it to soap? Why does cilantro taste like soap to you?
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20 minutes

Why Does Our Hair Turn Gray?

As people age, they may have some white or grey hair, even if it used to be another color like brown, blonde, or black. Explore why hair grows and why it changes color as people get older.
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20 minutes

Why Are You Left-Handed or Right-Handed?

Your dominant hand shapes how you write, how you play games, and effects a variety of skills. Explore handedness and why different people use different hands.
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Under 1 minute

Caffeine Sensitivity Is In Your Genes

Ever wondered why a single cup of coffee can keep you awake all night? It turns out, your DNA might hold the key!
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20 minutes

Why Does Water Hurt My Nose?

Jumping into the ocean, lake, pond, or pool may have lead you to suddenly get water up your nose. That is a painful experience! Learn why water hurts your nose and what goes on in your body when this happens.
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Under 1 minute

Why Your Earwax is Wet or Dry

Have you ever wondered why some people have wet and sticky earwax while others have dry and flaky earwax? In this video, Alex Dainis explores the fascinating link between earwax and DNA!
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20 minutes

Why Do We Sweat?

When it gets hot out, you exercise, or you start to feel nervous or scared, you may start to sweat. Discover why this happens to your body, what sweat is, where is comes from, and how it helps us.
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20 minutes

Why Do Dogs Pant?

When it gets hot humans start to sweat but dogs can't! Instead they pant. Explore why this helps dogs cool down and stay safe in the heat. Made with video from our partners at SciShow Kids.
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20 minutes

Why Should You Wear Sunscreen?

The warm sun on your skin can be so nice but the sunlight can be dangerous if you don't protect yourself against its damage. Learn how sunscreen can keep you safe, and how it works, and what it is protecting you against.
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20 minutes

Why Does Ice Cream Hurt My Head?

Have you ever been enjoying a frozen treat like ice cream when suddenly... BRAIN FREEZE! Learn why your head can start to hurt when you eat ice cream.
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40:54

Infertility and Birth Defect Research Breakthrough: Magdalena Zernicka-Goetz on her Embryo Model

What can be done to prevent miscarriage and birth defects during the critical first few weeks of pregnancy? Insoo Hyun, renowned bioethicist and philosopher, sits down with Magdalena Zernicka-Goetz from Caltech and the University of Cambridge to discuss...
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20 minutes

Why Can't We Drink the Ocean?

The Earth is mostly covered in water but we are not able to drink most of it. Discover why not and explore freshwater, saltwater, and how humans use water.
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20 minutes

What Do You Hear in a Seashell?

They say you can hear the ocean if you put your ear up to a seashell but what are you really hearing? Learn why the inside of a seashell sounds like the roar of the ocean.