I built a natural draft furnace to test ideas about how hot a furnace could get without the use of bellows. Natural draft is the flow of air through a furnace due to rising hot air. The hot gasses in the... continue reading

posted by Mordhaus 6 years 6 months 1 week ago • 454 views • 5:46

There’s a saying in the sea, 'If it’s a cone, leave it alone'. Although they look pretty harmless cone nails are pretty deadly. They're a chemical making factory that travels around an a giant sticky... continue reading

posted by Mordhaus 6 years 6 months 2 weeks ago • 790 views • 3:48

(H/T @eric3579)

posted by Aard Vark (oritteropo) 6 years 7 months ago • 1,765 views • 5:22

YouTube description: From bee sting to cobra bites, we measure the deadliest substance known to mankind and see how much it takes to kill a person. Everything from the top 10 deadliest substance, most... continue reading

posted by Aard Vark (oritteropo) 6 years 10 months 2 weeks ago • 2,401 views • 3:24

YouTube description: The average American consumes more than 3,600 calories daily – a 24% increase from 1961, when the average was just 2,880 calories. Americans haven't increased their consumption... continue reading

posted by Aard Vark (oritteropo) 6 years 10 months 2 weeks ago • 697 views • 1:37

Published on Dec 27, 2016 This is the story of how a tiny, magical creature was transformed into a cultural phenomenon by inventor, marketing genius and complicated eccentric Harold von Braunhut. Full... continue reading

posted by bobknight33 6 years 10 months 4 weeks ago • 1,442 views • 16:47

I built a water powered hammer called a “Monjolo”. I started by making a water spout from half a hollow log to direct water from the creek. This was set up in the creek and water flowed through it.... continue reading

posted by Joe Motion (lurgee) 7 years 1 week ago • 1,216 views • 8:51

I 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 2 weeks ago • 419 views • 11:27

In 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 2 weeks ago • 99 views • 6:27

Chop up 2 pounds of potatoes (or one pound, then halve the dressing) Toss with olive oil salt and pepper pepper pepper Bake at 400 30-45 minutes, wrastle' once or twice Dressing: 1/2 cup walnut oil ... continue reading

posted by Mordhaus 7 years 3 months 1 week ago • 233 views • 3:48

YouTube description: 1 tablespoon of olive oil destroys half an acre of waves on this lake. What The Physics?! (via digg, H/T @eric3579)... continue reading

posted by Aard Vark (oritteropo) 7 years 4 months 3 weeks ago • 618 views • 3:55

for Workers, Employers, and Pretty Much Everybody YouTube: Maybe the person working near you, the one who dragged himself to work and is now coughing and sneezing, couldn’t afford to stay home. Each... continue reading

posted by PlayhousePals 7 years 5 months ago • 521 views • 5:25

YouTube description: Bill reveals the stunning engineering underlying the design of a diaper. He describes the five layers of a diaper, including the superabsorbent polymer in the diaper's core. He... continue reading

posted by Aard Vark (oritteropo) 7 years 11 months ago • 337 views • 6:34

YouTube: Eyes have been around for a long time, like... half a billion years or so... and in that time, animals have evolved lots of crazy and amazing ways to observe the world around them!

posted by PlayhousePals 8 years 4 weeks ago • 403 views • 8:42

I 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 1 week ago • 621 views • 5:54

500ish were made and around half were sold outside the US before the company went under. It isn't mentioned in the video, but the chambers were specially engineered with a taper ream so that smaller cartridge... continue reading

posted by Mordhaus 8 years 2 months ago • 710 views • 5:15

"Ants don’t eat leaves. They use them to grow white tufts of nutritious fungus to feed their offspring. Their success as farmers has made leafcutter ants into fungus tycoons, complete with their own... continue reading

posted by ant 8 years 10 months 4 weeks ago • 345 views • 3:31

Simulated tornado being generated by a supercomputer (Blue Waters) with 20,000 processing cores. I need a dictionary to figure out half of the terms used in the talk, but the simulations are stunning.

posted by Ashenkase 9 years 6 months ago • 89 views • 16:43

In which Hank Green attempts to explain the revolution going on in Egypt (seemingly again). From YT: The situation in Egypt is extremely complicated and changing constantly. The arguments between... continue reading

posted by RFlagg 1 decade 10 months 1 week ago • 1,794 views • 7:42