Topic: heat

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This humidity-powered seed drills itself into the ground

Powered by changes in humidity—curling when dry and straightening when wet—this Erodium cicutarium seed (or more specifically, an achene) will bury itself by slowly drilling into the ground. This time lapse video by p...

Thermal expansion sphere and ring demonstrations

If you ever had trouble twisting open a jar lid that's stuck, try running it under some hot water. When you try again, it will most likely pop open with a twist thanks to thermal expansion. Most (but not all) matter w...

What is fire? Is it a solid, a liquid, or a gas?

Sitting around a campfire, you can feel its heat, smell the woody smoke, and hear it crackle. If you get too close, it burns your eyes and stings your nostrils. You could stare at the bright flames forever as they twi...

Exploration Mission-1: Testing 2 million liters of water

Watch two million liters (450,000 gallons) of water explode 30 meters (100 feet) into the air onto Launch Pad 39B at Florida's Kennedy Space Center. This is the successful October 15, 2018 test of NASA's Ignition Over...

Is climate change making hurricanes worse?

"So the important thing to understand about hurricanes is that they only form over warm water. Think of warm water as a fuel to the engine that is a hurricane. The hurricane forms when warm air over the ocean rises. A...

Cooling without polluting: Two new green air conditioning innovations

The starry night sky seems remarkably distant from the topic of air conditioning, but it’s revolutionizing the field in quite an unexpected way. In this episode of "The Spark," watch how scientists from across the glo...

The NASA-JPL engineers behind Mars InSight & MarCO

NASA-JPL's Mars InSight robotic lander is scheduled to touch down on Mars on November 26th, 2018 after a six-month voyage. Its mission: Gather data on the Red Planet's interior structure and help us better understand ...

Geothermal energy in Iceland

Iceland is a geothermal energy pioneer. Their unique geology, thanks to volcanism along a rift in the Eurasian tectonic plate and North American tectonic plate, provides a sustainable advantage: Heat from the ground. ...

What happens to balloon animals in liquid nitrogen?

How can you fit a bunch of balloon animals into a small container? Add some liquid nitrogen into the mix, as demonstrated in this video by Real Physics Live, the YouTube channel for Texas A&M University's Department o...

How NASA’s Parker Solar Probe Will Touch the Sun

In the early hours of August 12, 2018, NASA's Parker Solar Probe launched from Florida's Cape Canaveral Air Force Station, beginning a historic seven-year journey to 'touch the sun.' From The New York Times: The P...

How To Grow Coral

When visitors at Georgia Aquarium gaze upon the diverse array of colorful corals, [biologist Kim] Stone says many mistake the often stationary specimens for beautiful rocks. But corals are actually living animals—they...

How USGS scientists monitor Kilauea Volcano’s ongoing eruptions

On the Big Island of Hawaii, Kilauea Volcano continues to erupt. For U.S. Geological Survey scientists like volcanologist Dr. Alexa Van Eaton, the event is potentially a once-in-a-lifetime opportunity to learn as much...

How to make a turquoise goblet

How did the Venetians make turquoise glass in the late 1400s? Find out as Bill Gudenrath, glass specialist at the Corning Museum of Glass, uses traditional glass blowing methods to create a replica of the extremely ra...

How long have we known about climate change?

What is climate change, how long have we known about it, what will its effects be, and what can we do to help solve it? Hot Mess is a new PBS Digital Studios YouTube series from hosts Miriam Nielsen, Talia Buford, and...

The Story Behind Japan’s Bathing Monkeys – ScienceTake

A troop of 'snow monkeys' or Japanese Macaques at the Jigokudani Yaen-koen snow monkey park has been relaxing in the country's hot springs since the mid-1960s, a daily respite from the winter snow and an increasingly ...

How To Capture A Scent, an easy science experiment

If you've ever wanted to capture your favorite smell—a rose, cinnamon, a pine tree, a campfire—this easy experiment might be able to help. From Science Friday: Aha! Here's how to capture a scent. With the help of some...

Where does Space begin?

How far away is Space from where you are at this moment? How much closer is it when you're flying in a plane? And how close is the International Space Station to Earth if we can spot it in the sky? Travel up, up, u...

The Engineering of the Drinking Bird

How is a drinking bird like a heat engine? In this video from Engineer Guy Bill Hammack, we can see how this famous drinking/dipping bird toy "exploits a temperature difference to convert heat energy to a pressure dif...

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