One could easily do this with stereo photographs, but one could also do it by making a pseudoscope, with a short cardboard tube and mirrors, […]

During the 24 years from 1959 to 1983, the desert area increased from 66.23% to 81.23%, especially in the lower reach of the Tarim River. Stormy weather increases over time. For example, in the Yuli County (located in the lower reach of the Tarim River) the days of sandstorms were 108 days in the 1970s, which was about two times of that in the 1960s. At present, the number of days of sandstorms are 130 days and the days of dust are 180 days.

the home of the pine

I became bored while waiting in the airport so I watched a little cellevision.