Interstate 293 Interstate 293 Interstate 293 (abbreviated I-293) is an long loop surrounding Manchester, New Hampshire, USA roughly shaped like two sides of a triangle. Completing the loop in the northeast (the third side of the triangle) is Interstate 93. The southern portion of the loop shares the road with NH 101 and passes near Manchester-Boston Regional Airport and the Mall of New Hampshire. The western portion of the loop shares the road with the Everett Turnpike, but there are no tolls on this portion of the turnpike. Interstate 293 begins at a directional T interchange in the southeast of Manchester, where
Climate change adaptation people who bear emission reduction costs or benefits are often different from those who pay or benefit from adaptation measures. Economists, using cost-benefit analysis, have attempted to calculate an "optimal" balance of the costs and benefits between climate change impacts, adaptation, and mitigation. There are difficulties in doing this calculation, for example, future climate change damages are uncertain, as are the future costs of adaptation. Also, deciding what "optimal" is depends on value judgements made by the economist doing the study (Azar, 1998). For example, how to value impacts occurring in different regions and different times, and "non-market" impacts, e.g.,