Stone caps protect huge earth pillars from rain while surrounding soil erodes, leaving earth pyramids, many topped with stone hats.

posted by newtboy 5 years 1 month 3 weeks ago • 145 views • 4:41

This successful test of the upgraded and now human rated Dragon capsule is the first step towards the USA being able to send astronauts to the ISS without hitching a lift on Russian Soyuz spacecraft. ... continue reading

posted by Aard Vark (oritteropo) 6 years ago • 516 views • 4:57

The nutrient content of food is declining. Is it because of soil depletion, selective breeding, or... something else?

posted by nanrod 6 years 6 months 2 weeks ago • 580 views • 7:30

YT: 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. The axe head was made of amphibolite and the handle was made of a species of wattle.... continue reading

posted by nanrod 7 years 1 month 3 weeks ago • 524 views • 9:05

The landscape of Iceland has changed a lot in a thousand years. When the Vikings first arrived in the ninth century, the land was covered in 25 to 40 percent forest. Within a few centuries, almost all... continue reading

posted by newtboy 7 years 1 month 3 weeks ago • 802 views • 5:22

YouTube description: In civil engineering, quicksand is more than just a puddle of mud! The "quick condition" occurs when seepage reduces the effective stress of a soil. This can lead to some dangerous... continue reading

posted by Aard Vark (oritteropo) 7 years 5 months 2 weeks ago • 1,490 views • 5:15

I made a brick mold that makes bricks 25 x 12.5 x 7.5 cm from wood. A log was split and mortise and tenon joints were carved using a stone chisel and sharp rocks. The mold was lashed together with cane... continue reading

posted by Mordhaus 7 years 5 months 3 weeks ago • 1,024 views • 10:47

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 11 months 3 weeks ago • 420 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 8 years 2 weeks ago • 100 views • 6:27

This video, courtesy the Illinois Geological Survey, shows how earthquake liquefaction can affect buildings and buried structures. The concept presented is elementary but will provide you a basic understanding... continue reading

posted by Mordhaus 8 years 1 month ago • 817 views • 1:14

My nephew has tried Soylent [I can't get past the name]

posted by PlayhousePals 8 years 6 months 4 weeks ago • 17 views • 3:04

As urban populations continue to rise, innovators are looking beyond traditional farming as a way to feed everyone while having less impact on our land and water resources. Vertical farming is one solution... continue reading

posted by Mordhaus 8 years 8 months 1 week ago • 832 views • 3:38

YouTube description: Dirt is probably the cheapest and simplest construction material out there, but it's not very strong compared to other choices. Luckily geotechnical engineers have developed a way... continue reading

posted by Aard Vark (oritteropo) 8 years 9 months 4 weeks ago • 930 views • 7:53

Crops are growing thirsty!

posted by PlayhousePals 9 years 6 months 2 weeks ago • 2,260 views • 3:22

... or how to soil a pristine lab coat! YouTube Description: Gav and Dan are in the GE lab using nanotechnology to show you cool liquid physics at 2500fps. The first experiment shows a superhydrophobic... continue reading

posted by PlayhousePals 1 decade 1 year 2 months ago • 1,101 views • 5:34

Uhhh, to hell with the grocer's crap.... 1,000% more productive than conventional gardening & farming. The most robust, most scalable Aquaponics system in the world is the Portable Farms™ Aquaponics... continue reading

posted by chingalera 1 decade 1 year 6 months 3 weeks ago • 96 views • 6:31