We characterize games which induce truthful revelation of the players' preferences, either as dominant strategies (straightforward games) or in Nash equilibria. Strategies are statements of individual preferences on Rn. Outcomes are social preferences. Preferences over outcomes are defined by a...

What costs is it worth incurring to avoid the risk of climate change? People rarely think of this as a question amenable to a precise answer. Yet an answer can be calculated: it depends on the following four parameters (at least). These are (1) the probability distribution of the effects of...

In economic project analysis, the rate at which future benefits and costs are discounted relative to current values often determines whether a project passes the benefit-cost test. This is especially true of projects with long time horizons, such as those to reduce greenhouse gas (GHG)...