210 | Look Me in the Eye: Photographs of tears under microscopes
A look at one artist’s photographs of microscopic images of dried tears
207 | Traffic Cones and Water Bottles: A tear gas response guide
An overview of techniques for responding to tear gas and where these techniques have been used
156 | Dig, Dig, Dig: The history of the Rhine–Main–Danube Canal
A short peek into the economic and engineering history of the Rhine–Main–Danube Canal
139 | How Great Thou Art: What’s so special about the Great Lakes
An overview of the Great Lakes and what makes them distinctive
136 | Winging It: How bats can help us find drinking water
An overview of the theory that bats can be followed to find potable water