We visited a Glass Factory, in Grants Pass, Oregon, where we learned that glass is both a great temperature insulator and expands and contracts quickly which makes it break if cooled or heated too fast. I had not known glass blowers have kilns to keep their work warm and let it cool slowly.
The Great Cats World Park teaches that cats can purr or roar but not both because they have bone or cartilage in their throat. They also said different varieties like or dislike water. They claimed ocelots do not like water.
Oregon Caves was found by a hunting dog chasing a bear. I've never been in a cave where they failed to turn off the lights to prove how dark it is. The Oregon caves are different because they are mostly the metomorphic rock of limestone called marble. But there were two spots in the cave that also had igneous and sedimentary at the same time. The park has a cool old log lodge you see in the picture. But all you see is the top half because the bottom three stories are below the bottom of the picture. (Image source: http://www.flickr.com/photos/grampymoose/3036746628/)
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