Primitive Technology: Wattle and Daub Hut
AdultsConstructionNatureI built this hut in the bush using naturally occurring materials and primitive tools.
Primitive Technology: A-frame hut
AdultsConstructionNatureTechnology...I built an A frame hut as a large work space for projects. First I made a celt hatchet to cut timber for the hut.
British Diver Exposes Sea Of Plastic Rubbish Off Bali Coast
AdultsGlobal WarmingNatureThe ocean currents brought us in a lovely gift of a slick of jellyfish, plankton, leaves, branches, fronds, sticks, etc.... Oh, and some plastic.
Why Don't Sheep Shrink In The Rain?
AdultsAnimalsNatureScience...Getting wet isn't REALLY what makes wool shrink; it merely exacerbates the friction between the wool fibers, which is stronger in one direction than another, so when agitated in the washer or dryer, they migrate in relation to each other in a process called "felting."
Why BEAVERS Are The Smartest Thing In Fur Pants
AdultsAnimalsNatureEnvironmentBeavers have done more to shape North American landscapes than any animal beside humans. We don't notice them much today because there aren't many left, but before colonization, North America was home to hundreds of millions of these furry engineers.
Why Is Blue So Rare In Nature?
AdultsAnimalsEcologyNature...Among living things, the color blue is oddly rare. Blue rocks, blue sky, blue water, sure. But blue animals? They are few and far between. And the ones that do make blue? They make it in some very strange and special ways compared to other colors. In this video, we'll look at some very cool butterflies to help us learn how living things make blue, and why this beautiful hue is so rare in nature.
Inside an ICE CAVE! - Nature's Most Beautiful Blue
AdultsEcologyNatureScienceWhere do glaciers and icebergs get their beautiful blue color? This unique blue might be nature's most brilliant, and the color arises in a very special way thanks to some surprising interactions between light and water molecules.
How do fish make electricity? - Eleanor Nelsen
AdultsAnimalsBiologyNature...Nearly 350 species of fish have specialized anatomical structures that generate and detect electrical signals. Underwater, where light is scarce, electrical signals offer ways to communicate, navigate, find, and sometimes stun prey. But how do these fish produce electricity? And why? Eleanor Nelsen illuminates the science behind electric fish.
How long will human impacts last? - David Biello
AdultsGlobal WarmingHumanNature...Imagine aliens land on Earth a million years from now. What will these curious searchers find of us? They will find what geologists, scientists, and other experts are increasingly calling the Anthropocene, or new age of mankind. David Biello explains how the impacts that humans have made have become so pervasive, profound, and permanent that some geologists believe we merit our own epoch.