The world remains in a state of shock after spectacular satellite images of an undersea volcano erupting on the island of Tonga left a giant mushroom cloud in the Pacific region. With shocking visuals... continue reading
posted by eric3579 2 years 3 months 1 week ago • 42 views • 4:26search results matching tag: ground water
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For over a century, one of the most important salmon runs in the U.S. has had to contend with historic dams in Oregon and California. These dams have been responsible for the death of hundreds of thousands... continue reading
posted by newtboy 2 years 12 months ago • 134 views • 3:07YT: 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 6 years 3 months ago • 524 views • 9:05Most 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 ago • 105 views • 6:41I 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 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 ago • 99 views • 6:27YT-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 7 months 3 weeks 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 6 months 4 weeks ago • 110 views • 1:06Common misconceptions about climate change. References below: For CO2, sea levels, Arctic sea ice, Antarctic and Greenland land ice: http://climate.nasa.gov Satellite data shows that ground-based... continue reading
posted by cricket 9 years 7 months ago • 868 views • 6:50- 1