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Topic: underground
Why do millipedes have so many legs?
From its Latin roots, the word 'millipede' translates to 'thousand feet,' but out of the 12,000 described species of millipedes, we've yet to discover one with that many. In fact, when millipedes hatch from their eggs...
The Wood Wide Web: How trees secretly talk to and share with each other
Trees secretly talk to each other underground. They're passing information and resources to and from each other through a network of mycorrhizal fungi—mykós means fungus and riza means root in Greek—a mat of long, thi...
Why isn’t the world covered in poop?
Each day, the animal kingdom produces roughly enough poop to match the volume of water pouring over Victoria Falls. So why isn’t the planet covered in the stuff? You can thank the humble dung beetle for eating up the ...
Growing kidney bean & spinach plants, soil cross-section time lapses
See a kidney bean plant germinate, spreading its roots and sprouting up and up with its undulating green leaves, in this time-lapse by YouTuber GPhase. Each shot is captured 9 minutes 36 seconds apart at 30 frames per...
The secret belowground life of newborn meerkat pups
The sweet cooing, chirping sounds, the small furry faces, the incredibly intimate view that we don't often... ever... get to see. Via the BBC's Earth Unplugged and Animals with Cameras, specifically a wild Kalahari me...
Untangling the Devil’s Corkscrew – PBS Eons
In the late 1800s, paleontologists in Nebraska found huge coils of hardened sand stuck deep in the earth. Local ranchers called them Devil's Corkscrews and scientists called them Daemonelix. It was clear these corkscr...
How deep have humans dug into the Earth?
From the deep end of Olympic swimming pools to The Paris Catacombs to Switzerland's Gotthard Base Tunnel to the Z-44 Chayvo Well in eastern Russia, travel down into the planet via this surprising Tech Insider animatio...
The elusive Bipes biporus, Baja’s ‘worm lizard’
Long like a small snake, bright pink like an earthworm, and usually burrowing underground with the help of two tiny front legs, the Bipes biporus is an elusive lizard endemic to the Mexican peninsula of Baja Californi...
Deeper Underground: Walk the London Tube’s pedestrian tunnels
The infinite tunnels pull us in with their symmetry. The ceiling lights guide our eyes to the horizon. The tiles and posters form patterns that please the eye. The echoes of rushing crowds, a flickering light, a train...
How does a tunnel boring machine work?
How are new subway tunnels constructed underneath a busy city like Barcelona, Spain? This promotional animation demonstrates how a tunnel boring machine—specifically a Herrenknecht TBM with an Earth Pressure Balance S...
The Archaeology of Crossrail and the history of London
The construction of London’s newest railway, which will be known as the Elizabeth line when services begin in 2018, has given archaeologists a unique chance to explore some of the city’s most historically important si...
Genevieve von Petzinger & the invention of graphics on cave walls
Northern Spain's Cueva de El Castillo and Cueva de La Pasiega both contain incredible specimens of Franco-Cantabrian cave art, paintings and engravings in Cantabria province and southwestern France. El Castillo cave i...
Hydnora africana, the strangest plant in the world?
With no leaves and no chlorophyll, Southern Africa's Hydnora africana is a underground-dwelling parasitic plant in that gets all of its sugars, minerals, and water by attaching to the roots of Euphorbia plants. It als...
A Real-Life Bone Collector: Recovering an Extinct Human Ancestor
Follow biological anthropologist and 'bone collector' Dr. Marina Elliott deep into the ancient underground crevasses that would reveal around 1,500 bone fragments belonging to Homo naledi, a new species in human linea...
These Carnivorous Worms Catch Bugs by Mimicking the Night Sky
These slimy threads are 'fishing' lines in New Zealand's Waitomo Caves. The lures are the bioluminescent glow of Arachnocampa luminosa, or glow worms. Their carnivorous larvae create a starry night sky a half a mile d...
A puffin and its puffling surface from their underground nest
Though puffins spend much of their life at sea, when they nest on land, they nest underground in the Farne Islands and elsewhere around the globe. Their babies are called pufflings, and in this BBC Earth clip from Wor...
How Does It Grow? Potatoes
Potatoes are stem tubers, nutrient underground storage organs for the nightshade Solanum tuberosum L. Domesticated around 7,000–10,000 years ago in Peru and Bolivia, potatoes are now the fourth most-farmed crop on Ear...
The Great Stalacpipe Organ deep in Luray Caverns
Not far from Virginia's Shenandoah National Park, deep in the damp Luray Caverns, is a giant lithophone -- a pipeless organ that strikes 37 stalactites with solenoid-actuated rubber mallets in order to produce 37 beau...
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