On a hike looking for rare limestone endemic plants in Death Valley, we spotted the wreckage of a plane! After several hours of hiking and many interesting plants, we managed to scramble over to the wreck.... continue reading

posted by eric3579 1 year 5 months 3 weeks ago • 1,773 views • 5:01

At the old hut site (the new one being temporarily cut off by flooding) I made lime mortar from the shells of rainforest snails by firing them in a kiln, slaking them in water, mixing them into lime putty.... continue reading

posted by Mordhaus 3 years 7 months 3 weeks ago • 404 views • 7:08

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 3 years 12 months ago • 449 views • 5:46

The 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 4 years 5 months ago • 107 views • 10:14

From NYT: "...a really big drain called a spillway. And once you see it full of spiraling water, it is hard to take your eyes off it. For the first time in a decade, January and February have brought... continue reading

posted by chicchorea 4 years 8 months ago • 1,750 views • 1:31

It takes less acceleration to get to other stars than our own sun. Crazy, huh?

posted by Mordhaus 4 years 8 months 2 weeks ago • 1,862 views • 3:13

Kablooey!

posted by PlayhousePals 5 years 5 months ago • 140 views • 6:36