Topic: oxygen

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Humpback whales swim under the northern lights

Off the coast of Kvaløya island in Tromsø, humpback whales swim beneath the northern lights. The brief scene was captured by Norwegian photographer Harald Albrigtsen for Norwegian public television (NRK). Cue the auro...

How Does Oakland Turn Food Scraps to Soil?

Though you may not see a compost bin next to the trash and recycling bins where you live, in California's Bay Area, a green bin is the norm. From those green bins, food scraps, yard waste, and the like can be transfor...

How a Space Suit Works – with Helen Sharman

Chemist Helen Sharman was the first British astronaut in space, and as a part of Project Juno in 1991, was the first woman to visit the Mir space station. In the video above, Sharman gives us a mini-tour of the space ...

Much A-Doo About Poo – Gross Science

Poop! Poop for fertilizer, heat, and electricity! Around 300 cows at Jordan Dairy Farm help generate energy and a nutrient-rich digestate, thanks to a specially built barn floor that collects their manure. Nearby, an ...

What is Fire? – It’s Okay to Be Smart

That glowing light, those information-filled colors, that smoke and vapor that seems to magically light warm embers... What kind of physics and chemistry are at work inside of a flame? Joe Hanson from It's Okay to Be ...

Explore wastewater treatment with LeVar Burton & Reading Rainbow

How do we use technology to turn human waste into water that we can drink? This Reading Rainbow field trip is an excellent introduction to how we use bacteria, solar power, oxygen, gravity, chlorine, and more to reuse...

A waterless & chemical-free sound wave fire extinguisher

Using low-frequency sound waves to put out flames, this experimental fire extinguisher is the work of George Mason University engineering seniors Viet Tran and Seth Robertson. Watch as they Pump Up the Bass to Douse a...

From Drifter to Dynamo: The Story of Plankton – Deep Look

Mind-blowing fact: A massive group of single-celled algae called diatoms are considered champions of photosynthesis. Why? Diatoms are responsible for an estimated 20% to 40% -- maybe even 60% -- of the Earth's oxygen....

The Ring of Truth: Two Hydrogen Atoms & One Oxygen Atom

Possibly the most well-known scientific formula on the planet, H2O is one of those terms that we see around all the time. We know that H2O means water, and that a water molecule is composed of two hydrogen (H) atoms &...

The Cycle: Carbon and Oxygen and You – It’s Okay to Be Smart

From PBS Digital Studios and Joe Hanson of It's Okay to Be Smart, this is The Cycle: Carbon and Oxygen and You, a visualized explanation for what happens when we breathe. And here it is explained: via It's Oka...

The Fire Lab and the Mysterious Science of Fire

How does fire spread? How do different forest materials fuel it? How can firefighters better understand its behavior in order to control it? Why is the physics of fire so counter-intuitive and mysterious to us? At Th...

Baltimore’s Trash-Collecting Water Wheel

River cleanup in Baltimore has gotten easier (and more fun to watch) with the construction of the Healthy Harbor initiative's Water Wheel. Designed by John Kellett and Daniel Chase, the solar and water-powered trash c...

Match burning in slow motion

What’s happening when a match is lit? From Answers.com:  Matches contain sulfur, glass powder, and an oxidizing agent as the components in the match head. When you strike a match, the ...

How can we know anything about distant exoplanets?

How can we know the size, composition, and atmospheric makeup of distant exoplanets? NASA explains the details in this Alien Atmospheres video.  By observing periodic variations in the pare...

Subo Kayak Submarine

This unusual underwater journey in South Africa involves kayaking legend, French expat, and mad inventor Olivier Feuillette, and a modified kayak. With a waterproof top, a ballast (so that it will sink), scuba tanks ...

Make an underwater vortex ring generator

Watch YouTube user Xraise Cornell create a homemade horizontal vortex ring generator. When a small burst of air is released into a toroidal or poloidal vortex — essentially a spinning donut of water — it s...

A diver makes underwater vortex rings that can knock over rocks

And here I thought this was just an animated gif, but no, via Daily Picks & Flicks, there’s a video of a diver making a bubble ring or vortex ring, above. A vortex ring is the phenomenon where a quantity...

Periodic Table of Videos: Liquid Oxygen (slow motion)

From the Periodic Table of Videos team, hot charcoal meets Liquid Oxygen (slow motion). via Doobybrain.

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