3 Ways Of Seeing Invisible Air Flow
Adults Education Science ExperimentsIn this lab, they use different flow visualization techniques to help detect contraband, residues, and develop trace particle detection methods.
Why A Sausage Can Do What Your Gloves Cannot
Youth Science TechnologyDig into the science of touchscreens, and find out the difference between the two most common types: capacitive and resistive.
How To Draw A Funny Moose
Kids Art Creativity How-toFollow along with us and learn how to draw a funny, cute cartoon moose.
Machu Picchu 101 | National Geographic
Adults Nature Travel World History CultureMachu Picchu is a testament to the power and ingenuity of the Inca empire. Built without the use of mortar, metal tools, or the wheel, Machu Picchu stands as an archaeological wonder of the ancient world. But why was it built—and deserted?
What makes a poem … a poem? - Melissa Kovacs
Adults History Human Self Writing ArtWhat exactly makes a poem … a poem? Poets themselves have struggled with this question, often using metaphors to approximate a definition. Is a poem a little machine? A firework? An echo? A dream? Melissa Kovacs shares three recognizable characteristics of most poetry.
What Is Ocean Stratification?
Youth Environment Nature Science OceanThe ocean has layers that mix—sometimes. What are the layers made of? And why is it bad news when they don’t?
The Most Extreme Explosion in the Universe
Adults Life Science SpaceSupernovae are the most powerful explosions in the universe, unleashing enough energy to outshine galaxies. We have no real metaphor for their power – if the sun were to magically go supernova it would feel like you were being hit by the energy of a nuclear explosion, every second. For weeks.