Happy International Beaver Day! These toothy, flat-tailed rodents are some of the greatest builders on earth, and, as some scientific research has shown us, they build for the long term. Plus: for National Beer Day, the story of a beer receipt from ancient Mesopotamia.
Beaver Dams Can Last Centuries, 1868 Map Shows (Treehugger)
The Oldest Beer Receipt (Circa 2050 BC) (Open Culture)
