Topic: Earth

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Deep Look: The Hidden Perils of Permafrost

When you put a permafrost core in a CT scanner and analyze the data, you're traveling back in time to answer important questions: What was buried deep within the frozen soil? How much of it is ice or plant matter? How...

Mars Loops the Loop: What is retrograde motion?

What is retrograde motion and why does a planet like Mars appear to change directions in the night sky? Is it playfully looping about in its orbit around the sun or is something less strange going on? From episode 2 o...

Planet Earth in 4K: Time lapse images taken by an orbiting satellite

This video truly illustrates why our Earth is called The Blue Marble. Taken every 30 minutes over Indian ocean from May 15th to May 19th, 2011, these images by the geostationary Elektro-L weather satellite have been c...

Minute Earth: Why Do Rivers Curve?

"...All it takes to turn a straight stretch of river into a bendy one, is a little disturbance and a lot of time, and in nature there's plenty of both." In this Minute Earth episode, narrated by science writer Emily E...

Deep Look: The Amazing Life of Sand

There’s a story in every grain of sand: tales of life and death, fire and water. If you scooped up a handful of sand from every beach, you'd have a history of the world sifting through your fingers. From mountain boul...

It’s Okay to Be Smart: Why Do Clouds Stay Up?

Clouds are filled with so many water droplets that they're actually heavy... like 100 elephants heavy or a 747 airplane heavy! So why don't clouds fall out of the sky? It's Okay to Be Smart's Joe Hanson explains every...

Eruption at Iceland’s Bardabunga Volcano

When you send two quadcopters with cameras seriously close to a caldera full of exploding lava, something might melt! In this behind-the-scenes promo by drone maker DJI, director Eric Cheng, photographer Ragnar Th. Si...

First Evidence for Water Ice Clouds Found Outside Solar System

Take a (peacefully quiet) tour through and beyond our solar system to visit a neighboring brown dwarf -- a sort of failed star that's too large to be called a planet -- called W0855. A team of scientists, led by Carne...

Laniakea: Our home supercluster

Our home planet, Earth, circles the sun. The sun, our star, is but one of billions of stars in the Milky Way, our home galaxy... and beyond that? Where on the map of the cosmos is the Milky Way? For the first time, we...

Earth Observations: Astronauts search for cities from ISS’ Cupola

What do volcanoes, islands, dry lake beds, and big cities look like from space? Join International Space Station Expedition 38 crew members Mike Hopkins and Rick Mastracchio as they chitchat about Earth's cities and c...

Eva Szasz’s Cosmic Zoom (1968)

From director Eva Szasz and the National Film Board of Canada, Cosmic Zoom (1968) is a wordless journey that attempts to demonstrate the scale of the universe. Beginning with a boy boating on the Ottawa River, we trav...

Everything You Need to Know About Planet Earth

When we wake up, eat breakfast, get ready for school or work, and head out the door, we may not be thinking about how incredibly unique our small, wet rock of a planet is. But the Earth is incredibly unique. Learn som...

Dr. Mae Jemison, NASA Astronaut: I Wanted To Go Into Space

Find out why NASA astronaut Dr. Mae Jemison wanted to go into space in this profile from NOVA's The Secret Life of Scientists and Engineers. A physician, a chemical engineer, a teacher, a dancer, and the first Afri...

Mesmerizing flight visualizations over 24 hour periods

The above air traffic visualization shows the incredible amount of planes coming and going from European airspace over the course of one summer day. It was created by NATS, an air traffic control services provider, an...

The Quest for Sea Ice: Swimming with polar bears and a camera

Follow a group of four polar bears as they swim in search of ice. Arctic Bear Productions filmmaker Adam Ravetch captured this footage by attaching a camera to one of the four animals. The big paws, the sun on the hor...

The difference between weather and climate change

Dr. Neil deGrasse Tyson, astrophysicist and host of StarTalk and Cosmos: A Spacetime Odyssey, demonstrates the difference between weather and climate change as he walks along the beach with a dog.  Weather is ...

Kurzgesagt: How Big is the Moon Really

How Big is the Moon Really? It might be much bigger (or much smaller) than you'd imagine. Kurzgesagt explains.

PIXELS

PIXELS (2010), in which New York City is invaded by some old school 8-bit characters from an earlier generation of video games. Written and directed by Patrick Jean. In the archives: Wind Up Bots take over Buenos A...

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