https://youtu.be/3ykkyTgLocA A geologist describes the types of lava flows found on Hawaii, including pahoehoe and aa, shows what happens when wood is introduced into pahoehoe lava, and shows why lava... continue reading
posted by Aard Vark (oritteropo) 6 years 4 months 2 weeks ago • 841 views • 8:41Videos (41) | Sift Talk (0) | Blogs (0) | Comments (1000) |
Part 2 of Captain Disillusion's exploration of the ground-breaking effects that were used in the Back to the Future trilogy. Part 1 can be viewed here: https://videosift.com/video/VFXcool-Back-to-the-Future-Trilogy-1-... continue reading
posted by Fantomas 6 years 6 months ago • 274 views • 10:11Most of us think about erosion on the surface of the earth, but erosion can occur in the subsurface as well. In fact, scientist and engineers have a very creative name for just such a process: internal... continue reading
posted by Mekanikal 6 years 10 months 1 week ago • 105 views • 6:41The Lahti L-39 is a Finnish 20 mm anti-tank rifle used during the Second World War. It had excellent accuracy, penetration and range, but its size made transportation difficult. It was nicknamed "Norsupyssy"... continue reading
posted by Mordhaus 6 years 11 months 2 weeks ago • 140 views • 10:14YouTube: I came across these four physics puzzles over the years in discussions with Neil deGrasse Tyson (riddle 4: which part(s) of a moving train are going backwards with respect to the ground?), Simon... continue reading
posted by PlayhousePals 7 years 2 weeks ago • 1,232 views • 4:24Chef is holy ground for film foodies, and as demonstrated in a previous episode, has some real culinary chops behind it (courtesy of Roy Choi). I love a good Cubano as much as the next guy, but can some... continue reading
posted by Mekanikal 7 years 1 month 1 week ago • 43 views • 3:48I built this pottery kiln and some pottery from termite mound clay to test an alternative clay source to my usual one from the creek bank. I started by making a large grate from ordinary clay. It was just... continue reading
posted by Mordhaus 7 years 1 month 1 week ago • 419 views • 11:27In this video I build a garden to grow Cassava and yams, two staple food crops. Cassava is a shrub that develops large edible roots. Yams are a climbing vine that produce large, edible underground bulbs... continue reading
posted by Mordhaus 7 years 2 months 1 week ago • 99 views • 6:27What if there is a way to destroy the universe so fundamentally that life as we know it will be impossible forever?
posted by Mordhaus 7 years 6 months 2 weeks ago • 509 views • 5:59"This animation starts with an overview of North America, Central America, and the Caribbean. As the camera slowly pushes in, Hurricane Matthew begins to form. By the morning of October 2nd, 2016 Matthew... continue reading
posted by Warren E. Hale (MrFisk) 7 years 7 months ago • 9 views • 1:29YouTube: As we continue explore free will, today Hank considers a middle ground between hard determinism and libertarian free will: compatibilism. This view seeks to find ways that our internally motivated... continue reading
posted by PlayhousePals 7 years 8 months 2 weeks ago • 132 views • 8:55I invented the Bow Blower, a combination of the bow drill and forge blower to make a device that can force air into a fire while being easy to construct from commonly occurring natural materials using... continue reading
posted by Mordhaus 7 years 9 months 1 week ago • 1,388 views • 4:32I built this grass hut up on a ridge. It's roughly parallel with the tiled hut and wattle and daub hut that are a couple of hundred meters away down in a valley. I built it on a ridge to get away from... continue reading
posted by Mordhaus 7 years 10 months ago • 567 views • 4:17YouTube: A waterfall that seems to just disappear into the ground sounds pretty unbelievable, but scientists are still bewildered by the mysteries of Devil's Kettle Falls.
posted by PlayhousePals 8 years ago • 254 views • 3:22I made a rough type of textile from bark fibre. This is the same tree I use for making cordage though I don’t know its name. It has been raining a lot here lately (the video also shows how well the hut... continue reading
posted by Mordhaus 8 years ago • 639 views • 4:48I made this bow and arrow using only primitive tools and materials.The bow is 1.25 m (55 inches) long and shoots 60 cm (2 feet) long arrows. I don't know the draw weight - safe to say greater than 15 kg... continue reading
posted by Mordhaus 8 years 1 month ago • 621 views • 5:54A fun activity to help you figure out if your beliefs are well-grounded.
posted by Magicpants 8 years 2 months 2 weeks ago • 2,513 views • 4:17Now that's some good solid existential perspective for you.
posted by brycewi19 8 years 7 months 3 weeks ago • 629 views • 3:44YT-I built this tiled roof hut in the bush using only primitive tools and materials. The tools I used have been made in my previous videos. It should be pointed out that I do not live in the wild and that... continue reading
posted by newtboy 8 years 8 months ago • 1,709 views • 14:09YT: Water in rivers, in a glass, or falling from clouds obeys gravity. It's going to fall towards the ground because of the physical pull of the earth. But, what if we told you that you could turn a glass... continue reading
posted by Zawash 9 years 7 months 1 week ago • 110 views • 1:06