“In the 1930s, hundreds of thousands of Americans were recruited across the United States to protect and preserve the country’s forests, parks, and fields,” this Untold History...
Zambia’s South Luangwa National Park is a protected wonder known for its rich biodiversity, pristine wilderness, and abundant wildlife, including elephants, hippos, crocodiles, and a wide variety...
Elodea densa, sometimes referred to as Brazilian Elodea or anacharis, is a water plant commonly available in pet stores to help decorate and oxygenate hobby aquariums. Like...
A pre-drilled wooden base and laser-cut clear plastic supports hold up 3D-printed white ramps, gears, cams, and levers, all built to move 30 mm wooden balls smoothly...
This particular serpent is not an animal; it’s a low-pitched wood and leather instrument that was invented in France around 1595. It has six tone holes for...
“We’ve been using pigments and dyes for thousands of years, but they’re not the whole story when it comes to making color. ‘Structural’ color occurs when tiny...
Bactrian Camel Festivals are winter celebrations that offer a peek at the world of Mongolian camel herders in the Gobi Desert. The events can include camel polo,...
Hedgehog slice, kalter hund (cold dog), kalte schnauze (cold snout), or kellerkuchen (basement cake). This classic no-bake German chocolate biscuit cake appears to have many names and...
Every January, when emperor penguin chicks are around 5 months old and ready to leave their parents for the first time, they trek to the water’s edge...
What does your stomach do? Before there were TED-Ed videos to explain how your digestive system works, there were educational “sound filmstrips,” sets of audio recordings and...
This house-wide Rube Goldberg Machine keeps going and going, from the kitchen to the bathroom to the bedroom to an office and out to the living room,...
“Families have a new role: to provide emotional support. For mother and baby, nothing in the world is more important or brings greater joy.” This clip from...
Stop-motion is an animation technique that moves physical objects frame-by-frame to create an illusion of movement when the frames are played in sequence, and there are many...
To create secure pathways for animals to move safely across the landscape, engineered structures and designated zones are constructed over and under roadways. These are wildlife crossings,...