A few months ago, John Keefe wrote a Poynter.org How To about using shapefiles. The power of the shapefile, he wrote, is the ability to refer to regions instead of points. But what if your data has ...
For the last several years I’ve been showing Annie Leonard’s “The Story of Stuff” whenever I teach climate science to my students. I find it is interesting for them to think about where our “stuff” ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果