WALK.

Untitled (HND 04-05-11), 2011  

Software Calculates City-Specific Carbon Footprint

“One way to measure greenhouse gases is simply to capture them at the source: You put an instrument on a smokestack, for example. Cities, however, are full of cars, buses, factories and homes that all use fuel or electricity. No one really knows how much carbon dioxide, the main greenhouse gas, comes from each.

Ecologist Kevin Gurney says he can find out.”

Boston looks to transform parking spots into small parks

The program turns spaces into “parklets” - petite, three-season patios, with benches and planters atop platforms built flush with the sidewalk.

Historical Diagram: Hudson River Tubes Cutaway, 1909

While not strictly speaking a transit map, this awesome cutaway diagram of the Hudson River Tubes featured in our last post is just too cool not to share with you. Contemporaneous with that map, this cutaway shows the junction to the northern (or Uptown) cross-Hudson tubes which leave the image to the right. Of particular interest is how the lines stack and twist around each other, almost certainly done to minimise the width of any excavation work.