Extras

Video thumbnail: Science Trek Fish: These Fish Have Their Own Lights

Science Trek

Fish: These Fish Have Their Own Lights

What is bioluminescence and how do fish use it?

Fish: These Fish Have Their Own Lights

Video thumbnail: Science Trek Fish: Sharks & Seahorses

Science Trek

Fish: Sharks & Seahorses

What makes these species of fish so interesting?

Fish: Sharks & Seahorses

Video thumbnail: Science Trek Fish: Not All Fish in the Sea are Fish

Science Trek

Fish: Not All Fish in the Sea are Fish

Are Jellyfish and Cuttlefish actually fish?

Fish: Not All Fish in the Sea are Fish

Video thumbnail: Science Trek Fish: Fish Trivia

Science Trek

Fish: Fish Trivia

There are lots of fun facts about fish.

Fish: Fish Trivia

Video thumbnail: Science Trek Climate: Climates Over Time

Science Trek

Climate: Climates Over Time

How has the Earth’s climates changed over time?

Climate: Climates Over Time

Video thumbnail: Science Trek Climate: Animals at Risk

Science Trek

Climate: Animals at Risk

About a million animals are at risk of extinction because of global warming.

Climate: Animals at Risk

Video thumbnail: Science Trek Climate: A Gigaton of Ice

Science Trek

Climate: A Gigaton of Ice

What is a gigaton and why are the ocean levels rising?

Climate: A Gigaton of Ice

Video thumbnail: Science Trek Climate: A Few Causes of Climate Change

Science Trek

Climate: A Few Causes of Climate Change

What are some of the causes of climate change?

Climate: A Few Causes of Climate Change

Video thumbnail: Science Trek Satellites: Where Do Satellites Go to Die?

Science Trek

Satellites: Where Do Satellites Go to Die?

Find out how we are dealing with space junk.

Satellites: Where Do Satellites Go to Die?

Video thumbnail: Science Trek Satellites: Over Other Planets

Science Trek

Satellites: Over Other Planets

Satellites don’t just orbit Earth. Find out how they help explore other planets.

Satellites: Over Other Planets

Video thumbnail: Science Trek Satellites: How to Find a Stellar Nursery

Science Trek

Satellites: How to Find a Stellar Nursery

Satellites don’t just study Earth. See what one satellites teaches us about the universe.

Satellites: How to Find a Stellar Nursery

Video thumbnail: Science Trek Satellites: Counting Polar Bears from Space

Science Trek

Satellites: Counting Polar Bears from Space

Satellites are used to study the Earth in unexpected ways.

Satellites: Counting Polar Bears from Space

Video thumbnail: Science Trek Planets: What is a Moon?

Science Trek

Planets: What is a Moon?

There are lots of moons in the Solar System, but only one Moon. Find out why.

Planets: What is a Moon?

Video thumbnail: Science Trek Planets: How Long Is A Day?

Science Trek

Planets: How Long Is A Day?

How long is a day on Mars and why is it different from Earth?

Planets: How Long Is A Day?

Video thumbnail: Science Trek Planets: Exoplanets Examined

Science Trek

Planets: Exoplanets Examined

What is an exoplanet? Go outside our Solar System and find out.

Planets: Exoplanets Examined

Video thumbnail: Science Trek Planets: Dirty Snowballs and Rocks

Science Trek

Planets: Dirty Snowballs and Rocks

Find out how comets and asteroids changed Earth’s history.

Planets: Dirty Snowballs and Rocks

Video thumbnail: Science Trek Viruses: Virus or Bacteria?

Science Trek

Viruses: Virus or Bacteria?

What’s the difference between viruses and bacteria?

Viruses: Virus or Bacteria?

Video thumbnail: Science Trek Viruses: SmallPox

Science Trek

Viruses: SmallPox

How did we rid the world of the Smallpox virus?

Viruses: SmallPox

Video thumbnail: Science Trek Viruses: Are Viruses Germs?

Science Trek

Viruses: Are Viruses Germs?

Germs make you sick. Find out what they are.

Viruses: Are Viruses Germs?

Video thumbnail: Science Trek D4K: Tour a Dinosaur Lab

Science Trek

D4K: Tour a Dinosaur Lab

Take a tour of a dinosaur lab.

D4K: Tour a Dinosaur Lab

Video thumbnail: Science Trek Tour a Dinosaur Dig

Science Trek

Tour a Dinosaur Dig

Paleontologist David Varricchio takes us on a tour of a dinosaur dig.

Tour a Dinosaur Dig

Video thumbnail: Science Trek Television: It Starts With Dots

Science Trek

Television: It Starts With Dots

Find out about the technology of television in this video short.

Television: It Starts With Dots

Video thumbnail: Science Trek Butterflies:  They Taste With Their Feet

Science Trek

Butterflies: They Taste With Their Feet

Why do butterflies come in so many colors?

Butterflies: They Taste With Their Feet