When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains in this movie remix.
Web Map Solutions' Matt Sheehan suggested last month that the GIS industry is splitting. But apparently he was not sure since he put a question mark at the end of the blog post title. So, is the GIS world splitting?