PVC; Small Portable Homes

Two short items of possible interest.

As I was deep in writing and research mode for the show unearthing stuff about two chemicals that have made the news (because of environmental contamination, as well as occupational safety (at least in one case)), I tripped over thee following information about another chemical you may have heard of: PVC.

Polyvinyl chloride (PVC) expose over at the Houston Chronicle. Not sure what sort of cleanup has happened in the intervening almost decade. Wikipedia has some referenced information on the compound and its uses.

In completely unrelated news, I stumbled upon this today: a portable dwelling that claims to be part Yurt, part Dome, the "Yome".
Then again, there is the more traditional looking tiny home from, natch, Tumbleweed Tiny Homes.

Using Physics to Build Large Monuments

Presenting Wallace T. Wallington, retired carpenter and construction worker and his demonstrations of how the Egyptians, Picts, Britons and others may have moved extremely heavy rocks, stones, and blocks of such materials to erect and construct menhirs, obelisks, pyramids, Stonehenge, Easter Island, and similar sites.

And it doesn't require a huge work crew - just a bit of ingenuity.

There is a video here. and...
also one available on Wallington's website.